First cut of Cloud Print Proxy implementation. The code is not enabled for now. Soon the cloud print proxy code will move from the browser process to a background process called the service process.

BUG=None
TEST=None for now

Review URL: http://codereview.chromium.org/1566047

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@45000 0039d316-1c4b-4281-b951-d872f2087c98

23 files changed, 2827 insertions, 0 deletions

diff --git a/chrome/browser/printing/cloud_print/cloud_print_consts.cc b/chrome/browser/printing/cloud_print/cloud_print_consts.cc
new file mode 100644
index 0000000..d1c4685
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/cloud_print_consts.cc
@@ -0,0 +1,30 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Constant defines used in the cloud print proxy code
+
+#include "chrome/browser/printing/cloud_print/cloud_print_consts.h"
+
+const char kProxyIdValue[] = "proxy";
+const char kPrinterNameValue[] = "printer";
+const char kPrinterDescValue[] = "description";
+const char kPrinterCapsValue[] = "capabilities";
+const char kPrinterDefaultsValue[] = "defaults";
+const char kPrinterStatusValue[] = "status";
+
+// Values in the respone JSON from the cloud print server
+const wchar_t kPrinterListValue[] = L"printers";
+const wchar_t kSuccessValue[] = L"success";
+const wchar_t kNameValue[] = L"name";
+const wchar_t kIdValue[] = L"id";
+const wchar_t kTicketUrlValue[] = L"ticketUrl";
+const wchar_t kFileUrlValue[] = L"fileUrl";
+const wchar_t kJobListValue[] = L"jobs";
+const wchar_t kTitleValue[] = L"title";
+const wchar_t kPrinterCapsHashValue[] = L"capsHash";
+
+// TODO(sanjeevr): Change this to a real one. Also read this from prefs instead
+// of hardcoding.
+const char kCloudPrintServerUrl[] = "https://<TBD>";
+
diff --git a/chrome/browser/printing/cloud_print/cloud_print_consts.h b/chrome/browser/printing/cloud_print/cloud_print_consts.h
new file mode 100644
index 0000000..13a091f
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/cloud_print_consts.h
@@ -0,0 +1,37 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_CONSTS_H_
+#define CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_CONSTS_H_
+
+#include "base/basictypes.h"
+
+// Constant defines used in the cloud print proxy code
+extern const char kProxyIdValue[];
+extern const char kPrinterNameValue[];
+extern const char kPrinterDescValue[];
+extern const char kPrinterCapsValue[];
+extern const char kPrinterDefaultsValue[];
+extern const char kPrinterStatusValue[];
+// Values in the respone JSON from the cloud print server
+extern const wchar_t kPrinterListValue[];
+extern const wchar_t kSuccessValue[];
+extern const wchar_t kNameValue[];
+extern const wchar_t kIdValue[];
+extern const wchar_t kTicketUrlValue[];
+extern const wchar_t kFileUrlValue[];
+extern const wchar_t kJobListValue[];
+extern const wchar_t kTitleValue[];
+extern const wchar_t kPrinterCapsHashValue[];
+
+extern const char kCloudPrintServerUrl[];
+
+// Max interval between retrying connection to the server
+const int64 kMaxRetryInterval = 5*60*1000;  // 5 minutes in millseconds
+const int64 kBaseRetryInterval = 5*1000;  // 5 seconds
+const int kMaxRetryCount = 5;
+const int64 kJobStatusUpdateInterval = 10*1000;  // 10 seconds
+
+#endif  // CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_CONSTS_H_
+
diff --git a/chrome/browser/printing/cloud_print/cloud_print_helpers.cc b/chrome/browser/printing/cloud_print/cloud_print_helpers.cc
new file mode 100644
index 0000000..336a203
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/cloud_print_helpers.cc
@@ -0,0 +1,161 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/printing/cloud_print/cloud_print_helpers.h"
+
+#include "base/json/json_reader.h"
+#include "base/rand_util.h"
+#include "base/scoped_ptr.h"
+#include "base/string_util.h"
+#include "base/task.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/net/url_fetcher.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_consts.h"
+#include "chrome/browser/profile.h"
+
+std::string StringFromJobStatus(cloud_print::PrintJobStatus status) {
+  std::string ret;
+  switch (status) {
+    case cloud_print::PRINT_JOB_STATUS_IN_PROGRESS:
+      ret = "in_progress";
+      break;
+    case cloud_print::PRINT_JOB_STATUS_ERROR:
+      ret = "error";
+      break;
+    case cloud_print::PRINT_JOB_STATUS_COMPLETED:
+      ret = "done";
+      break;
+    default:
+      ret = "unknown";
+      NOTREACHED();
+      break;
+  }
+  return ret;
+}
+
+GURL CloudPrintHelpers::GetUrlForPrinterRegistration() {
+  return GURL(StringPrintf("%s/printing/register", kCloudPrintServerUrl));
+}
+
+GURL CloudPrintHelpers::GetUrlForPrinterUpdate(const std::string& printer_id) {
+  return GURL(StringPrintf("%s/printing/update?printerid=%s",
+                           kCloudPrintServerUrl, printer_id.c_str()));
+}
+
+GURL CloudPrintHelpers::GetUrlForPrinterDelete(const std::string& printer_id) {
+  return GURL(StringPrintf("%s/printing/delete?printerid=%s",
+                           kCloudPrintServerUrl, printer_id.c_str()));
+}
+
+GURL CloudPrintHelpers::GetUrlForPrinterList(const std::string& proxy_id) {
+  return GURL(StringPrintf(
+              "%s/printing/list?proxy=%s",
+              kCloudPrintServerUrl, proxy_id.c_str()));
+}
+
+GURL CloudPrintHelpers::GetUrlForJobFetch(const std::string& printer_id) {
+  return GURL(StringPrintf(
+              "%s/printing/fetch?printerid=%s",
+              kCloudPrintServerUrl, printer_id.c_str()));
+}
+
+GURL CloudPrintHelpers::GetUrlForJobStatusUpdate(
+    const std::string& job_id, cloud_print::PrintJobStatus status) {
+  std::string status_string = StringFromJobStatus(status);
+  return GURL(StringPrintf(
+              "%s/printing/control?jobid=%s&status=%s",
+              kCloudPrintServerUrl, job_id.c_str(), status_string.c_str()));
+}
+
+GURL CloudPrintHelpers::GetUrlForJobStatusUpdate(
+    const std::string& job_id, const cloud_print::PrintJobDetails& details) {
+  std::string status_string = StringFromJobStatus(details.status);
+  return GURL(StringPrintf(
+              "%s/printing/control?jobid=%s&status=%s&code=%d&message=%s"
+              "&numpages=%d&pagesprinted=%d",
+              kCloudPrintServerUrl, job_id.c_str(), status_string.c_str(),
+              details.platform_status_flags, details.status_message.c_str(),
+              details.total_pages, details.pages_printed));
+}
+
+bool CloudPrintHelpers::ParseResponseJSON(
+    const std::string& response_data, bool* succeeded,
+    DictionaryValue** response_dict) {
+  scoped_ptr<Value> message_value(base::JSONReader::Read(response_data, false));
+  DCHECK(message_value.get());
+  if (!message_value.get()) {
+    return false;
+  }
+  if (!message_value->IsType(Value::TYPE_DICTIONARY)) {
+    NOTREACHED();
+    return false;
+  }
+  DictionaryValue* response_dict_local =
+      static_cast<DictionaryValue*>(message_value.get());
+  if (succeeded) {
+    response_dict_local->GetBoolean(kSuccessValue, succeeded);
+  }
+  if (response_dict) {
+    *response_dict = response_dict_local;
+    message_value.release();
+  }
+  return true;
+}
+
+void CloudPrintHelpers::PrepCloudPrintRequest(URLFetcher* request,
+                                              const std::string& auth_token) {
+  request->set_request_context(
+      Profile::GetDefaultRequestContext());
+  std::string headers = "Authorization: GoogleLogin auth=";
+  headers += auth_token;
+  request->set_extra_request_headers(headers);
+}
+
+void CloudPrintHelpers::HandleServerError(int* error_count, int max_retry_count,
+                                          int64 max_retry_interval,
+                                          int64 base_retry_interval,
+                                          Task* task_to_retry,
+                                          Task* task_on_give_up) {
+  (*error_count)++;
+  if ((-1 != max_retry_count) && (*error_count > max_retry_count)) {
+    if (task_on_give_up) {
+      MessageLoop::current()->PostTask(FROM_HERE, task_on_give_up);
+    }
+  } else {
+    int64 retry_interval = base_retry_interval * (*error_count);
+    if ((-1 != max_retry_interval) && (retry_interval > max_retry_interval)) {
+      retry_interval = max_retry_interval;
+    }
+    MessageLoop::current()->PostDelayedTask(FROM_HERE, task_to_retry,
+        retry_interval);
+  }
+}
+
+void CloudPrintHelpers::AddMultipartValueForUpload(
+    const std::string& value_name, const std::string& value,
+    const std::string& mime_boundary, const std::string& content_type,
+    std::string* post_data) {
+  DCHECK(post_data);
+  // First line is the boundary
+  post_data->append("--" + mime_boundary + "\r\n");
+  // Next line is the Content-disposition
+  post_data->append(StringPrintf("Content-Disposition: form-data; "
+                   "name=\"%s\"\r\n", value_name.c_str()));
+  if (!content_type.empty()) {
+    // If Content-type is specified, the next line is that
+    post_data->append(StringPrintf("Content-Type: %s\r\n",
+                      content_type.c_str()));
+  }
+  // Leave an empty line and append the value.
+  post_data->append(StringPrintf("\r\n%s\r\n", value.c_str()));
+}
+
+// Create a MIME boundary marker (27 '-' characters followed by 16 hex digits).
+void CloudPrintHelpers::CreateMimeBoundaryForUpload(std::string* out) {
+  int r1 = base::RandInt(0, kint32max);
+  int r2 = base::RandInt(0, kint32max);
+  SStringPrintf(out, "---------------------------%08X%08X", r1, r2);
+}
+
diff --git a/chrome/browser/printing/cloud_print/cloud_print_helpers.h b/chrome/browser/printing/cloud_print/cloud_print_helpers.h
new file mode 100644
index 0000000..46f0e5b
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/cloud_print_helpers.h
@@ -0,0 +1,71 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_HELPERS_H_
+#define CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_HELPERS_H_
+
+#include <string>
+
+#include "chrome/browser/printing/cloud_print/printer_info.h"
+#include "googleurl/src/gurl.h"
+
+class DictionaryValue;
+class Task;
+class URLFetcher;
+
+// Helper methods for the cloud print proxy code.
+class CloudPrintHelpers {
+ public:
+  static GURL GetUrlForPrinterRegistration();
+  static GURL GetUrlForPrinterUpdate(const std::string& printer_id);
+  static GURL GetUrlForPrinterDelete(const std::string& printer_id);
+  static GURL GetUrlForPrinterList(const std::string& proxy_id);
+  static GURL GetUrlForJobFetch(const std::string& printer_id);
+  static GURL GetUrlForJobStatusUpdate(const std::string& job_id,
+                                       cloud_print::PrintJobStatus status);
+  static GURL GetUrlForJobStatusUpdate(
+      const std::string& job_id, const cloud_print::PrintJobDetails& details);
+  // Parses the response data for any cloud print server request. The method
+  // returns false if there was an error in parsing the JSON. The succeeded
+  // value returns the value of the "success" value in the response JSON.
+  // Returns the response as a dictionary value.
+  static bool ParseResponseJSON(const std::string& response_data,
+      bool* succeeded, DictionaryValue** response_dict);
+  // Sets up common parameters for a cloud print request
+  // (such as the GAIA auth token in the request headers, the request context
+  // etc).
+  static void PrepCloudPrintRequest(URLFetcher* request,
+                                    const std::string& auth_token);
+  // Strictly speaking, this helper method is not specific to cloud printing.
+  // It handles the logic to retry tasks when the server returns an error.
+  // The parameters are as below:
+  // |error_count| Contains the current number of consecutive failed attempts.
+  // This method increments it (in/out)
+  // |max_retry_count| Number of retries before giving up. -1 implies no limit.
+  // |max_retry_interval| Maximum amount of time (in ms) we are willing to
+  // wait between retries. -1 implies no limit.
+  // |base_retry_interval| Starting value of the retry interval. This
+  // method progressively increases the interval on each retry.
+  // |task_to_retry| The task to be retried.
+  // |task_on_give_up| Task to be performed when we give up. This is only
+  // valid when max_retry_count is not -1. It can be NULL.
+  static void HandleServerError(int* error_count, int max_retry_count,
+                                int64 max_retry_interval,
+                                int64 base_retry_interval,
+                                Task* task_to_retry, Task* task_on_give_up);
+  // Prepares one value as part of a multi-part upload request.
+  static void AddMultipartValueForUpload(
+      const std::string& value_name, const std::string& value,
+      const std::string& mime_boundary, const std::string& content_type,
+      std::string* post_data);
+// Create a MIME boundary marker (27 '-' characters followed by 16 hex digits).
+  static void CreateMimeBoundaryForUpload(std::string *out);
+
+ private:
+  CloudPrintHelpers() {
+  }
+};
+
+#endif  // CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_HELPERS_H_
+
diff --git a/chrome/browser/printing/cloud_print/cloud_print_proxy_backend.cc b/chrome/browser/printing/cloud_print/cloud_print_proxy_backend.cc
new file mode 100644
index 0000000..dbc6640
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/cloud_print_proxy_backend.cc
@@ -0,0 +1,496 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/printing/cloud_print/cloud_print_proxy_backend.h"
+
+#include "base/file_util.h"
+#include "base/md5.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_consts.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_helpers.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
+#include "chrome/browser/printing/cloud_print/printer_job_handler.h"
+#include "googleurl/src/gurl.h"
+#include "net/url_request/url_request_status.h"
+
+// The real guts of SyncBackendHost, to keep the public client API clean.
+class CloudPrintProxyBackend::Core
+    : public base::RefCountedThreadSafe<CloudPrintProxyBackend::Core>,
+      public URLFetcherDelegate,
+      public cloud_print::PrinterChangeNotifierDelegate,
+      public PrinterJobHandlerDelegate {
+ public:
+  explicit Core(CloudPrintProxyBackend* backend);
+  // Note:
+  //
+  // The Do* methods are the various entry points from CloudPrintProxyBackend
+  // It calls us on a dedicated thread to actually perform synchronous
+  // (and potentially blocking) syncapi operations.
+  //
+  // Called on the CloudPrintProxyBackend core_thread_ to perform
+  // initialization
+  void DoInitialize(const std::string& auth_token,
+                    const std::string& proxy_id);
+  // Called on the CloudPrintProxyBackend core_thread_ to perform
+  // shutdown.
+  void DoShutdown();
+  void DoRegisterSelectedPrinters(
+      const cloud_print::PrinterList& printer_list);
+  void DoHandlePrinterNotification(const std::string& printer_id);
+
+  // URLFetcher::Delegate implementation.
+  virtual void OnURLFetchComplete(const URLFetcher* source, const GURL& url,
+                                  const URLRequestStatus& status,
+                                  int response_code,
+                                  const ResponseCookies& cookies,
+                                  const std::string& data);
+// cloud_print::PrinterChangeNotifier::Delegate implementation
+  virtual void OnPrinterAdded();
+  virtual void OnPrinterDeleted() {
+  }
+  virtual void OnPrinterChanged() {
+  }
+  virtual void OnJobChanged() {
+  }
+  // PrinterJobHandler::Delegate implementation
+  void OnPrinterJobHandlerShutdown(PrinterJobHandler* job_handler,
+                                   const std::string& printer_id);
+
+ protected:
+  // FrontendNotification defines parameters for NotifyFrontend. Each enum
+  // value corresponds to the one CloudPrintProcyService method that
+  // NotifyFrontend should invoke.
+  enum FrontendNotification {
+    PRINTER_LIST_AVAILABLE,  // OnPrinterListAvailable
+  };
+  // Prototype for a response handler.
+  typedef void (CloudPrintProxyBackend::Core::*ResponseHandler)(
+      const URLFetcher* source, const GURL& url,
+      const URLRequestStatus& status, int response_code,
+      const ResponseCookies& cookies, const std::string& data);
+  // Begin response handlers
+  void HandlePrinterListResponse(const URLFetcher* source, const GURL& url,
+                                 const URLRequestStatus& status,
+                                 int response_code,
+                                 const ResponseCookies& cookies,
+                                 const std::string& data);
+  void HandleRegisterPrinterResponse(const URLFetcher* source,
+                                     const GURL& url,
+                                     const URLRequestStatus& status,
+                                     int response_code,
+                                     const ResponseCookies& cookies,
+                                     const std::string& data);
+  // End response handlers
+
+  // NotifyFrontend is how the Core communicates with the frontend across
+  // threads.
+  void NotifyFrontend(FrontendNotification notification);
+  // Starts a new printer registration process.
+  void StartRegistration();
+  // Ends the printer registration process.
+  void EndRegistration();
+  // Registers printer capabilities and defaults for the next printer in the
+  // list with the cloud print server.
+  void RegisterNextPrinter();
+  // Retrieves the list of registered printers for this user/proxy combination
+  // from the cloud print server.
+  void GetRegisteredPrinters();
+  void HandleServerError(Task* task_to_retry);
+  // Removes the given printer from the list. Returns false if the printer
+  // did not exist in the list.
+  bool RemovePrinterFromList(const std::string& printer_name);
+  // Initializes a job handler object for the specified printer. The job
+  // handler is responsible for checking for pending print jobs for this
+  // printer and print them.
+  void InitJobHandlerForPrinter(DictionaryValue* printer_data);
+
+  // Our parent CloudPrintProxyBackend
+  CloudPrintProxyBackend* backend_;
+  // The list of printers to be registered with the cloud print server.
+  // To begin with,this list is initialized with the list of local and network
+  // printers available. Then we query the server for the list of printers
+  // already registered. We trim this list to remove the printers already
+  // registered. We then pass a copy of this list to the frontend to give the
+  // user a chance to further trim the list. When the frontend gives us the
+  // final list we make a copy into this so that we can start registering.
+  cloud_print::PrinterList printer_list_;
+  // The URLFetcher instance for the current request
+  scoped_ptr<URLFetcher> request_;
+  // The index of the nex printer to be uploaded.
+  size_t next_upload_index_;
+  // The unique id for this proxy
+  std::string proxy_id_;
+  // The GAIA auth token
+  std::string auth_token_;
+  // The number of consecutive times that connecting to the server failed.
+  int server_error_count_;
+  // Cached info about the last printer that we tried to upload. We cache this
+  // so we won't have to requery the printer if the upload fails and we need
+  // to retry.
+  std::string last_uploaded_printer_name_;
+  cloud_print::PrinterCapsAndDefaults last_uploaded_printer_info_;
+  // A map of printer id to job handler.
+  typedef std::map<std::string, scoped_refptr<PrinterJobHandler> >
+      JobHandlerMap;
+  JobHandlerMap job_handler_map_;
+  ResponseHandler next_response_handler_;
+  cloud_print::PrinterChangeNotifier printer_change_notifier_;
+  bool new_printers_available_;
+
+  DISALLOW_COPY_AND_ASSIGN(Core);
+};
+
+CloudPrintProxyBackend::CloudPrintProxyBackend(
+    CloudPrintProxyFrontend* frontend)
+      : core_thread_("Chrome_CloudPrintProxyCoreThread"),
+        frontend_loop_(MessageLoop::current()),
+        frontend_(frontend) {
+  DCHECK(frontend_);
+  core_ = new Core(this);
+}
+
+CloudPrintProxyBackend::~CloudPrintProxyBackend() {
+  DCHECK(!core_);
+}
+
+bool CloudPrintProxyBackend::Initialize(const std::string& auth_token,
+                                        const std::string& proxy_id) {
+  if (!core_thread_.Start())
+    return false;
+  core_thread_.message_loop()->PostTask(FROM_HERE,
+      NewRunnableMethod(
+        core_.get(), &CloudPrintProxyBackend::Core::DoInitialize, auth_token,
+        proxy_id));
+  return true;
+}
+
+void CloudPrintProxyBackend::Shutdown() {
+  core_thread_.message_loop()->PostTask(FROM_HERE,
+      NewRunnableMethod(core_.get(),
+                        &CloudPrintProxyBackend::Core::DoShutdown));
+  core_thread_.Stop();
+  core_ = NULL;  // Releases reference to core_.
+}
+
+void CloudPrintProxyBackend::RegisterPrinters(
+    const cloud_print::PrinterList& printer_list) {
+  core_thread_.message_loop()->PostTask(FROM_HERE,
+      NewRunnableMethod(
+          core_.get(),
+          &CloudPrintProxyBackend::Core::DoRegisterSelectedPrinters,
+          printer_list));
+}
+
+void CloudPrintProxyBackend::HandlePrinterNotification(
+    const std::string& printer_id) {
+  core_thread_.message_loop()->PostTask(FROM_HERE,
+      NewRunnableMethod(
+          core_.get(),
+          &CloudPrintProxyBackend::Core::DoHandlePrinterNotification,
+          printer_id));
+}
+
+CloudPrintProxyBackend::Core::Core(CloudPrintProxyBackend* backend)
+    : backend_(backend), next_upload_index_(0), server_error_count_(0),
+     next_response_handler_(NULL), new_printers_available_(false) {
+}
+
+void CloudPrintProxyBackend::Core::DoInitialize(const std::string& auth_token,
+                                                const std::string& proxy_id) {
+  DCHECK(MessageLoop::current() == backend_->core_thread_.message_loop());
+  printer_change_notifier_.StartWatching(std::string(), this);
+  proxy_id_ = proxy_id;
+  auth_token_ = auth_token;
+  StartRegistration();
+}
+
+void CloudPrintProxyBackend::Core::StartRegistration() {
+  printer_list_.clear();
+  cloud_print::EnumeratePrinters(&printer_list_);
+  server_error_count_ = 0;
+  // Now we need to ask the server about printers that were registered on the
+  // server so that we can trim this list.
+  GetRegisteredPrinters();
+}
+
+void CloudPrintProxyBackend::Core::EndRegistration() {
+  request_.reset();
+  if (new_printers_available_) {
+    new_printers_available_ = false;
+    StartRegistration();
+  }
+}
+
+void CloudPrintProxyBackend::Core::DoShutdown() {
+  // Need to kill all running jobs.
+  while (!job_handler_map_.empty()) {
+    JobHandlerMap::iterator index = job_handler_map_.begin();
+    // Shutdown will call our OnPrinterJobHandlerShutdown method which will
+    // remove this from the map.
+    index->second->Shutdown();
+  }
+}
+
+void CloudPrintProxyBackend::Core::DoRegisterSelectedPrinters(
+    const cloud_print::PrinterList& printer_list) {
+  server_error_count_ = 0;
+  printer_list_.assign(printer_list.begin(), printer_list.end());
+  DCHECK(MessageLoop::current() == backend_->core_thread_.message_loop());
+  next_upload_index_ = 0;
+  RegisterNextPrinter();
+}
+
+void CloudPrintProxyBackend::Core::DoHandlePrinterNotification(
+    const std::string& printer_id) {
+  JobHandlerMap::iterator index = job_handler_map_.find(printer_id);
+  if (index != job_handler_map_.end())
+    index->second->NotifyJobAvailable();
+}
+
+void CloudPrintProxyBackend::Core::GetRegisteredPrinters() {
+  request_.reset(
+      new URLFetcher(CloudPrintHelpers::GetUrlForPrinterList(proxy_id_),
+                     URLFetcher::GET, this));
+  CloudPrintHelpers::PrepCloudPrintRequest(request_.get(), auth_token_);
+  next_response_handler_ =
+      &CloudPrintProxyBackend::Core::HandlePrinterListResponse;
+  request_->Start();
+}
+
+void CloudPrintProxyBackend::Core::RegisterNextPrinter() {
+  // For the next printer to be uploaded, create a multi-part post request to
+  // upload the printer capabilities and the printer defaults.
+  if (next_upload_index_ < printer_list_.size()) {
+    const cloud_print::PrinterBasicInfo& info =
+        printer_list_.at(next_upload_index_);
+    bool have_printer_info = true;
+    // If we are retrying a previous upload, we don't need to fetch the caps
+    // and defaults again.
+    if (info.printer_name != last_uploaded_printer_name_) {
+      have_printer_info = cloud_print::GetPrinterCapsAndDefaults(
+          info.printer_name.c_str(), &last_uploaded_printer_info_);
+    }
+    if (have_printer_info) {
+      last_uploaded_printer_name_ = info.printer_name;
+      std::string mime_boundary;
+      CloudPrintHelpers::CreateMimeBoundaryForUpload(&mime_boundary);
+      std::string post_data;
+      CloudPrintHelpers::AddMultipartValueForUpload(kProxyIdValue, proxy_id_,
+                                                    mime_boundary,
+                                                    std::string(), &post_data);
+      CloudPrintHelpers::AddMultipartValueForUpload(kPrinterNameValue,
+                                                    info.printer_name,
+                                                    mime_boundary,
+                                                    std::string(), &post_data);
+      CloudPrintHelpers::AddMultipartValueForUpload(kPrinterDescValue,
+                                                    info.printer_description,
+                                                    mime_boundary,
+                                                    std::string() , &post_data);
+      CloudPrintHelpers::AddMultipartValueForUpload(
+          kPrinterStatusValue, StringPrintf("%d", info.printer_status),
+          mime_boundary, std::string(), &post_data);
+      CloudPrintHelpers::AddMultipartValueForUpload(
+          kPrinterCapsValue, last_uploaded_printer_info_.printer_capabilities,
+          mime_boundary, last_uploaded_printer_info_.caps_mime_type,
+          &post_data);
+      CloudPrintHelpers::AddMultipartValueForUpload(
+          kPrinterDefaultsValue, last_uploaded_printer_info_.printer_defaults,
+          mime_boundary, last_uploaded_printer_info_.defaults_mime_type,
+          &post_data);
+      // Send a hash of the printer capabilities to the server. We will use this
+      // later to check if the capabilities have changed
+      CloudPrintHelpers::AddMultipartValueForUpload(
+          WideToUTF8(kPrinterCapsHashValue).c_str(),
+          MD5String(last_uploaded_printer_info_.printer_capabilities),
+          mime_boundary, std::string(), &post_data);
+      // Terminate the request body
+      post_data.append("--" + mime_boundary + "--\r\n");
+      std::string mime_type("multipart/form-data; boundary=");
+      mime_type += mime_boundary;
+      request_.reset(
+          new URLFetcher(CloudPrintHelpers::GetUrlForPrinterRegistration(),
+                         URLFetcher::POST, this));
+      CloudPrintHelpers::PrepCloudPrintRequest(request_.get(), auth_token_);
+      request_->set_upload_data(mime_type, post_data);
+      next_response_handler_ =
+          &CloudPrintProxyBackend::Core::HandleRegisterPrinterResponse;
+      request_->Start();
+    } else {
+      NOTREACHED();
+    }
+  } else {
+    EndRegistration();
+  }
+}
+
+// URLFetcher::Delegate implementation.
+void CloudPrintProxyBackend::Core::OnURLFetchComplete(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  DCHECK(source == request_.get());
+  // We need a next response handler
+  DCHECK(next_response_handler_);
+  (this->*next_response_handler_)(source, url, status, response_code,
+                                  cookies, data);
+}
+
+void CloudPrintProxyBackend::Core::NotifyFrontend(
+    FrontendNotification notification) {
+  switch (notification) {
+    case PRINTER_LIST_AVAILABLE:
+      backend_->frontend_->OnPrinterListAvailable(printer_list_);
+      break;
+    default:
+      NOTREACHED();
+      break;
+  }
+}
+
+void CloudPrintProxyBackend::Core::HandlePrinterListResponse(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  if (status.is_success()) {
+    server_error_count_ = 0;
+    if (response_code == 200) {
+      // Parse the response JSON for the list of printers already registered.
+      bool succeeded = false;
+      DictionaryValue* response_dict_temp = NULL;
+      CloudPrintHelpers::ParseResponseJSON(data, &succeeded,
+                                           &response_dict_temp);
+      scoped_ptr<DictionaryValue> response_dict;
+      response_dict.reset(response_dict_temp);
+      if (succeeded) {
+        DCHECK(response_dict.get());
+        ListValue* printer_list = NULL;
+        response_dict->GetList(kPrinterListValue, &printer_list);
+        // There may be no "printers" value in the JSON
+        if (printer_list) {
+          for (size_t index = 0; index < printer_list->GetSize(); index++) {
+            DictionaryValue* printer_data = NULL;
+            if (printer_list->GetDictionary(index, &printer_data)) {
+              std::string printer_name;
+              printer_data->GetString(kNameValue, &printer_name);
+              RemovePrinterFromList(printer_name);
+              InitJobHandlerForPrinter(printer_data);
+            } else {
+              NOTREACHED();
+            }
+          }
+        }
+      }
+    }
+    MessageLoop::current()->DeleteSoon(FROM_HERE, request_.release());
+    if (!printer_list_.empty()) {
+      // Let the frontend know that we have a list of printers available.
+      backend_->frontend_loop_->PostTask(FROM_HERE, NewRunnableMethod(this,
+          &Core::NotifyFrontend, PRINTER_LIST_AVAILABLE));
+    } else {
+      // No more work to be done here.
+      MessageLoop::current()->PostTask(
+          FROM_HERE, NewRunnableMethod(this, &Core::EndRegistration));
+    }
+  } else {
+    HandleServerError(NewRunnableMethod(this, &Core::GetRegisteredPrinters));
+  }
+}
+
+void CloudPrintProxyBackend::Core::InitJobHandlerForPrinter(
+    DictionaryValue* printer_data) {
+  DCHECK(printer_data);
+  std::string printer_id;
+  printer_data->GetString(kIdValue, &printer_id);
+  DCHECK(!printer_id.empty());
+  JobHandlerMap::iterator index = job_handler_map_.find(printer_id);
+  // We might already have a job handler for this printer
+  if (index == job_handler_map_.end()) {
+    cloud_print::PrinterBasicInfo printer_info;
+    printer_data->GetString(kNameValue, &printer_info.printer_name);
+    DCHECK(!printer_info.printer_name.empty());
+    printer_data->GetString(UTF8ToWide(kPrinterDescValue),
+                            &printer_info.printer_description);
+    printer_data->GetInteger(UTF8ToWide(kPrinterStatusValue),
+                             &printer_info.printer_status);
+    std::string caps_hash;
+    printer_data->GetString(kPrinterCapsHashValue, &caps_hash);
+    scoped_refptr<PrinterJobHandler> job_handler;
+    job_handler = new PrinterJobHandler(printer_info, printer_id, caps_hash,
+                                        auth_token_, this);
+    job_handler_map_[printer_id] = job_handler;
+    job_handler->Initialize();
+  }
+}
+
+void CloudPrintProxyBackend::Core::HandleRegisterPrinterResponse(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  Task* next_task =
+      NewRunnableMethod(this,
+                        &CloudPrintProxyBackend::Core::RegisterNextPrinter);
+  if (status.is_success() && (response_code == 200)) {
+    bool succeeded = false;
+    DictionaryValue* response_dict = NULL;
+    CloudPrintHelpers::ParseResponseJSON(data, &succeeded, &response_dict);
+    if (succeeded) {
+      DCHECK(response_dict);
+      ListValue* printer_list = NULL;
+      response_dict->GetList(kPrinterListValue, &printer_list);
+      // There should be a "printers" value in the JSON
+      DCHECK(printer_list);
+      if (printer_list) {
+        DictionaryValue* printer_data = NULL;
+        if (printer_list->GetDictionary(0, &printer_data)) {
+          InitJobHandlerForPrinter(printer_data);
+        }
+      }
+    }
+    server_error_count_ = 0;
+    next_upload_index_++;
+    MessageLoop::current()->PostTask(FROM_HERE, next_task);
+  } else {
+    HandleServerError(next_task);
+  }
+}
+
+void CloudPrintProxyBackend::Core::HandleServerError(Task* task_to_retry) {
+  CloudPrintHelpers::HandleServerError(
+      &server_error_count_, -1, kMaxRetryInterval, kBaseRetryInterval,
+      task_to_retry, NULL);
+}
+
+bool CloudPrintProxyBackend::Core::RemovePrinterFromList(
+    const std::string& printer_name) {
+  bool ret = false;
+  for (cloud_print::PrinterList::iterator index = printer_list_.begin();
+       index != printer_list_.end(); index++) {
+    if (0 == base::strcasecmp(index->printer_name.c_str(),
+                              printer_name.c_str())) {
+      index = printer_list_.erase(index);
+      ret = true;
+      break;
+    }
+  }
+  return ret;
+}
+
+// cloud_print::PrinterChangeNotifier::Delegate implementation
+void CloudPrintProxyBackend::Core::OnPrinterAdded() {
+  if (request_.get()) {
+    new_printers_available_ = true;
+  } else {
+    StartRegistration();
+  }
+}
+
+// PrinterJobHandler::Delegate implementation
+void CloudPrintProxyBackend::Core::OnPrinterJobHandlerShutdown(
+    PrinterJobHandler* job_handler, const std::string& printer_id) {
+  job_handler_map_.erase(printer_id);
+}
+
diff --git a/chrome/browser/printing/cloud_print/cloud_print_proxy_backend.h b/chrome/browser/printing/cloud_print/cloud_print_proxy_backend.h
new file mode 100644
index 0000000..675ae12
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/cloud_print_proxy_backend.h
@@ -0,0 +1,70 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_PROXY_BACKEND_H_
+#define CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_PROXY_BACKEND_H_
+
+#include <map>
+#include <string>
+
+#include "base/thread.h"
+#include "chrome/browser/net/url_fetcher.h"
+#include "chrome/browser/printing/cloud_print/printer_info.h"
+
+class CloudPrintProxyService;
+class DictionaryValue;
+
+// CloudPrintProxyFrontend is the interface used by CloudPrintProxyBackend to
+// communicate with the entity that created it and, presumably, is interested in
+// cloud print proxy related activity.
+// NOTE: All methods will be invoked by a CloudPrintProxyBackend on the same
+// thread used to create that CloudPrintProxyBackend.
+class CloudPrintProxyFrontend {
+ public:
+  CloudPrintProxyFrontend() {}
+
+  // There is a list of printers available that can be registered.
+  virtual void OnPrinterListAvailable(
+      const cloud_print::PrinterList& printer_list) = 0;
+
+ protected:
+  // Don't delete through SyncFrontend interface.
+  virtual ~CloudPrintProxyFrontend() {
+  }
+ private:
+  DISALLOW_COPY_AND_ASSIGN(CloudPrintProxyFrontend);
+};
+
+class CloudPrintProxyBackend {
+ public:
+  explicit CloudPrintProxyBackend(CloudPrintProxyFrontend* frontend);
+  ~CloudPrintProxyBackend();
+
+  bool Initialize(const std::string& auth_token, const std::string& proxy_id);
+  void Shutdown();
+  void RegisterPrinters(const cloud_print::PrinterList& printer_list);
+  void HandlePrinterNotification(const std::string& printer_id);
+
+ private:
+  // The real guts of SyncBackendHost, to keep the public client API clean.
+  class Core;
+  // A thread we dedicate for use to perform initialization and
+  // authentication.
+  base::Thread core_thread_;
+  // Our core, which communicates with AuthWatcher for GAIA authentication and
+  // which contains printer registration code.
+  scoped_refptr<Core> core_;
+  // A reference to the MessageLoop used to construct |this|, so we know how
+  // to safely talk back to the SyncFrontend.
+  MessageLoop* const frontend_loop_;
+  // The frontend which is responsible for displaying UI and updating Prefs
+  CloudPrintProxyFrontend* frontend_;
+
+  friend class base::RefCountedThreadSafe<CloudPrintProxyBackend::Core>;
+
+  DISALLOW_COPY_AND_ASSIGN(CloudPrintProxyBackend);
+};
+
+#endif  // CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_PROXY_BACKEND_H_
+
diff --git a/chrome/browser/printing/cloud_print/cloud_print_proxy_service.cc b/chrome/browser/printing/cloud_print/cloud_print_proxy_service.cc
new file mode 100644
index 0000000..75ec15c
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/cloud_print_proxy_service.cc
@@ -0,0 +1,103 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
+
+#include <stack>
+#include <vector>
+
+#include "base/path_service.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chrome_thread.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/profile_manager.h"
+#include "chrome/common/chrome_paths.h"
+#include "chrome/common/notification_type.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/browser/pref_service.h"
+
+CloudPrintProxyService::CloudPrintProxyService(Profile* profile) {
+}
+
+CloudPrintProxyService::~CloudPrintProxyService() {
+  Shutdown();
+}
+
+void CloudPrintProxyService::Initialize() {
+  PrefService* prefs = g_browser_process->local_state();
+  DCHECK(prefs);
+  prefs->RegisterStringPref(prefs::kCloudPrintProxyId,  L"");
+  prefs->RegisterStringPref(prefs::kCloudPrintProxyName,  L"");
+  prefs->RegisterStringPref(prefs::kCloudPrintAuthToken,  L"");
+}
+
+
+void CloudPrintProxyService::EnableForUser(const std::string& auth_token) {
+  if (backend_.get())
+    return;
+
+  PrefService* prefs = g_browser_process->local_state();
+  DCHECK(prefs);
+  std::string proxy_id =
+      WideToUTF8(prefs->GetString(prefs::kCloudPrintProxyId));
+  if (proxy_id.empty()) {
+    // TODO(sanjeevr): Determine whether the proxy id should be server generated
+    proxy_id = cloud_print::GenerateProxyId();
+    prefs->SetString(prefs::kCloudPrintProxyId, UTF8ToWide(proxy_id));
+  }
+  std::string token_to_use = auth_token;
+  if (token_to_use.empty()) {
+    token_to_use = WideToUTF8(prefs->GetString(prefs::kCloudPrintAuthToken));
+  } else {
+    prefs->SetString(prefs::kCloudPrintAuthToken, UTF8ToWide(token_to_use));
+  }
+
+  backend_.reset(new CloudPrintProxyBackend(this));
+  backend_->Initialize(token_to_use, proxy_id);
+}
+
+void CloudPrintProxyService::DisableForUser() {
+  PrefService* prefs = g_browser_process->local_state();
+  DCHECK(prefs);
+  prefs->ClearPref(prefs::kCloudPrintAuthToken);
+  Shutdown();
+}
+
+void CloudPrintProxyService::HandlePrinterNotification(
+    const std::string& printer_id) {
+  if (backend_.get())
+    backend_->HandlePrinterNotification(printer_id);
+}
+
+void CloudPrintProxyService::Shutdown() {
+  if (backend_.get())
+    backend_->Shutdown();
+  backend_.reset();
+}
+
+// Notification methods from the backend. Called on UI thread.
+void CloudPrintProxyService::OnPrinterListAvailable(
+    const cloud_print::PrinterList& printer_list) {
+  DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
+  // Here we will trim the list to eliminate printers already registered.
+  // If there are any more printers left in the list after trimming, we will
+  // show the print selection UI. Any printers left in the list after the user
+  // selection process will then be registered.
+  backend_->RegisterPrinters(printer_list);
+}
+
+// Called when authentication is done. Called on UI thread.
+// Note that sid can be empty. This is a temp function to steal the sid
+// from the Bookmarks Sync code. When the common GAIA signin code is done,
+// The CloudPrintProxyService will simply get a notification when authentication
+// done with an lsid and a sid.
+void CloudPrintProxyService::OnAuthenticated(const std::string& sid) {
+  FilePath user_data_dir;
+  PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
+  ProfileManager* profile_manager = g_browser_process->profile_manager();
+  Profile* profile = profile_manager->GetDefaultProfile(user_data_dir);
+  profile->GetCloudPrintProxyService()->EnableForUser(sid);
+}
+
diff --git a/chrome/browser/printing/cloud_print/cloud_print_proxy_service.h b/chrome/browser/printing/cloud_print/cloud_print_proxy_service.h
new file mode 100644
index 0000000..92985e2
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/cloud_print_proxy_service.h
@@ -0,0 +1,59 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_PROXY_SERVICE_H_
+#define CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_PROXY_SERVICE_H_
+
+#include <string>
+#include <map>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/file_path.h"
+#include "base/observer_list.h"
+#include "base/scoped_ptr.h"
+#include "chrome/browser/profile.h"
+
+#include "chrome/browser/printing/cloud_print/cloud_print_proxy_backend.h"
+
+class Profile;
+
+// Layer between the browser user interface and the cloud print proxy backend.
+class CloudPrintProxyService : public CloudPrintProxyFrontend {
+ public:
+  explicit CloudPrintProxyService(Profile* profile);
+  virtual ~CloudPrintProxyService();
+
+  // Initializes the object. This should be called every time an object of this
+  // class is constructed.
+  void Initialize();
+
+  // Enables/disables cloud printing for the user
+  virtual void EnableForUser(const std::string& auth_token);
+  virtual void DisableForUser();
+  // Notification received from the server for a particular printer.
+  // We need to inform the backend to look for jobs for this printer.
+  void HandlePrinterNotification(const std::string& printer_id);
+
+  // Notification methods from the backend. Called on UI thread.
+  void OnPrinterListAvailable(const cloud_print::PrinterList& printer_list);
+
+  // Called when authentication is done. Called on UI thread.
+  // Note that sid can be empty. This is placeholder code until we can get
+  // common GAIA signin code in place.
+  // TODO(sanjeevr): Remove this.
+  static void OnAuthenticated(const std::string& auth_token);
+
+ protected:
+  void Shutdown();
+
+  // Our asynchronous backend to communicate with sync components living on
+  // other threads.
+  scoped_ptr<CloudPrintProxyBackend> backend_;
+
+  DISALLOW_COPY_AND_ASSIGN(CloudPrintProxyService);
+};
+
+#endif  // CHROME_BROWSER_PRINTING_CLOUD_PRINT_CLOUD_PRINT_PROXY_SERVICE_H_
+
diff --git a/chrome/browser/printing/cloud_print/job_status_updater.cc b/chrome/browser/printing/cloud_print/job_status_updater.cc
new file mode 100644
index 0000000..a17c451
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/job_status_updater.cc
@@ -0,0 +1,90 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/printing/cloud_print/job_status_updater.h"
+
+#include "base/json/json_reader.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_consts.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_helpers.h"
+#include "googleurl/src/gurl.h"
+
+JobStatusUpdater::JobStatusUpdater(const std::string& printer_name,
+                                   const std::string& job_id,
+                                   cloud_print::PlatformJobId& local_job_id,
+                                   const std::string& auth_token,
+                                   Delegate* delegate)
+    : printer_name_(printer_name), job_id_(job_id),
+      local_job_id_(local_job_id), auth_token_(auth_token),
+      delegate_(delegate), stopped_(false) {
+  DCHECK(delegate_);
+}
+
+// Start checking the status of the local print job.
+void JobStatusUpdater::UpdateStatus() {
+  // It does not matter if we had already sent out an update and are waiting for
+  // a response. This is a new update and we will simply cancel the old request
+  // and send a new one.
+  if (!stopped_) {
+    bool need_update = false;
+    // If the job has already been completed, we just need to update the server
+    // with that status. The *only* reason we would come back here in that case
+    // is if our last server update attempt failed.
+    if (last_job_details_.status == cloud_print::PRINT_JOB_STATUS_COMPLETED) {
+      need_update = true;
+    } else {
+      cloud_print::PrintJobDetails details;
+      if (cloud_print::GetJobDetails(printer_name_, local_job_id_, &details)) {
+        if (details != last_job_details_) {
+          last_job_details_ = details;
+          need_update = true;
+        }
+      } else {
+        // If GetJobDetails failed, the most likely case is that the job no
+        // longer exists in the OS queue. We are going to assume it is done in
+        // this case.
+        last_job_details_.Clear();
+        last_job_details_.status = cloud_print::PRINT_JOB_STATUS_COMPLETED;
+        need_update = true;
+      }
+    }
+    if (need_update) {
+      GURL update_url = CloudPrintHelpers::GetUrlForJobStatusUpdate(
+          job_id_, last_job_details_);
+      request_.reset(new URLFetcher(update_url, URLFetcher::GET, this));
+      CloudPrintHelpers::PrepCloudPrintRequest(request_.get(), auth_token_);
+      request_->Start();
+    }
+  }
+}
+
+void JobStatusUpdater::Stop() {
+  request_.reset();
+  DCHECK(delegate_);
+  stopped_ = true;
+  delegate_->OnJobCompleted(this);
+}
+
+// URLFetcher::Delegate implementation.
+void JobStatusUpdater::OnURLFetchComplete(const URLFetcher* source,
+                                          const GURL& url,
+                                          const URLRequestStatus& status,
+                                          int response_code,
+                                          const ResponseCookies& cookies,
+                                          const std::string& data) {
+  int64 next_update_interval = kJobStatusUpdateInterval;
+  if (!status.is_success() || (response_code != 200)) {
+    next_update_interval *= 10;
+    MessageLoop::current()->PostDelayedTask(
+        FROM_HERE, NewRunnableMethod(this, &JobStatusUpdater::UpdateStatus),
+        next_update_interval);
+  } else if (last_job_details_.status ==
+             cloud_print::PRINT_JOB_STATUS_COMPLETED) {
+    MessageLoop::current()->PostTask(
+        FROM_HERE, NewRunnableMethod(this, &JobStatusUpdater::Stop));
+  }
+}
+
diff --git a/chrome/browser/printing/cloud_print/job_status_updater.h b/chrome/browser/printing/cloud_print/job_status_updater.h
new file mode 100644
index 0000000..d480621
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/job_status_updater.h
@@ -0,0 +1,64 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_PRINTING_CLOUD_PRINT_JOB_STATUS_UPDATER_H_
+#define CHROME_BROWSER_PRINTING_CLOUD_PRINT_JOB_STATUS_UPDATER_H_
+
+#include <string>
+
+#include "base/file_path.h"
+#include "base/ref_counted.h"
+#include "base/thread.h"
+#include "chrome/browser/printing/cloud_print/printer_info.h"
+#include "chrome/browser/net/url_fetcher.h"
+#include "net/url_request/url_request_status.h"
+
+// Periodically monitors the status of a local print job and updates the
+// cloud print server accordingly. When the job has been completed this
+// object releases the reference to itself which should cause it to
+// self-destruct.
+class JobStatusUpdater : public base::RefCountedThreadSafe<JobStatusUpdater>,
+                         public URLFetcher::Delegate {
+ public:
+  class Delegate {
+   public:
+    virtual bool OnJobCompleted(JobStatusUpdater* updater) = 0;
+  };
+
+  JobStatusUpdater(const std::string& printer_name,
+                   const std::string& job_id,
+                   cloud_print::PlatformJobId& local_job_id,
+                   const std::string& auth_token,
+                   Delegate* delegate);
+  // Checks the status of the local print job and sends an update.
+  void UpdateStatus();
+  void Stop();
+  // URLFetcher::Delegate implementation.
+  virtual void OnURLFetchComplete(const URLFetcher* source, const GURL& url,
+                                  const URLRequestStatus& status,
+                                  int response_code,
+                                  const ResponseCookies& cookies,
+                                  const std::string& data);
+ private:
+  std::string printer_name_;
+  std::string job_id_;
+  cloud_print::PlatformJobId local_job_id_;
+  cloud_print::PrintJobDetails last_job_details_;
+  scoped_ptr<URLFetcher> request_;
+  std::string auth_token_;
+  Delegate* delegate_;
+  // A flag that is set to true in Stop() and will ensure the next scheduled
+  // task will do nothing.
+  bool stopped_;
+  DISALLOW_COPY_AND_ASSIGN(JobStatusUpdater);
+};
+
+// This typedef is to workaround the issue with certain versions of
+// Visual Studio where it gets confused between multiple Delegate
+// classes and gives a C2500 error. (I saw this error on the try bots -
+// the workaround was not needed for my machine).
+typedef JobStatusUpdater::Delegate JobStatusUpdaterDelegate;
+
+#endif  // CHROME_BROWSER_PRINTING_CLOUD_PRINT_JOB_STATUS_UPDATER_H_
+
diff --git a/chrome/browser/printing/cloud_print/printer_info.h b/chrome/browser/printing/cloud_print/printer_info.h
new file mode 100644
index 0000000..1bb1746
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/printer_info.h
@@ -0,0 +1,125 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_PRINTING_CLOUD_PRINT_PRINTER_INFO_H_
+#define CHROME_BROWSER_PRINTING_CLOUD_PRINT_PRINTER_INFO_H_
+
+#include <string>
+#include <vector>
+
+#include "base/file_path.h"
+
+// This is the interface for platform-specific code for cloud print
+namespace cloud_print {
+
+typedef int PlatformJobId;
+
+struct PrinterBasicInfo {
+  std::string printer_name;
+  std::string printer_description;
+  int printer_status;
+  PrinterBasicInfo() : printer_status(0) {
+  }
+};
+
+typedef std::vector<PrinterBasicInfo> PrinterList;
+
+struct PrinterCapsAndDefaults {
+  std::string printer_capabilities;
+  std::string caps_mime_type;
+  std::string printer_defaults;
+  std::string defaults_mime_type;
+};
+
+enum PrintJobStatus {
+  PRINT_JOB_STATUS_INVALID,
+  PRINT_JOB_STATUS_IN_PROGRESS,
+  PRINT_JOB_STATUS_ERROR,
+  PRINT_JOB_STATUS_COMPLETED
+};
+
+struct PrintJobDetails {
+  PrintJobStatus status;
+  int platform_status_flags;
+  std::string status_message;
+  int total_pages;
+  int pages_printed;
+  PrintJobDetails() : status(PRINT_JOB_STATUS_INVALID),
+                      platform_status_flags(0), total_pages(0),
+                      pages_printed(0) {
+  }
+  void Clear() {
+    status = PRINT_JOB_STATUS_INVALID;
+    platform_status_flags = 0;
+    status_message.clear();
+    total_pages = 0;
+    pages_printed = 0;
+  }
+  bool operator ==(const PrintJobDetails& other) const {
+    return (status == other.status) &&
+           (platform_status_flags == other.platform_status_flags) &&
+           (status_message == other.status_message) &&
+           (total_pages == other.total_pages) &&
+           (pages_printed == other.pages_printed);
+  }
+  bool operator !=(const PrintJobDetails& other) const {
+    return !(*this == other);
+  }
+};
+
+// Enumerates the list of installed local and network printers.
+void EnumeratePrinters(PrinterList* printer_list);
+// Gets the capabilities and defaults for a specific printer.
+bool GetPrinterCapsAndDefaults(const std::string& printer_name,
+                               PrinterCapsAndDefaults* printer_info);
+bool ValidatePrintTicket(const std::string& printer_name,
+                         const std::string& print_ticket_data);
+std::string GenerateProxyId();
+bool SpoolPrintJob(const std::string& print_ticket,
+                   const FilePath& print_data_file_path,
+                   const std::string& print_data_mime_type,
+                   const std::string& printer_name,
+                   const std::string& job_title,
+                   PlatformJobId* job_id_ret);
+
+bool GetJobDetails(const std::string& printer_name,
+                   PlatformJobId job_id,
+                   PrintJobDetails *job_details);
+bool IsValidPrinter(const std::string& printer_name);
+
+// A class that watches changes to a printer or a print server.
+// The set of notifications are very coarse-grained (even though the Windows
+// API allows for listening to fine-grained details about a printer, this class
+// does not support that level of fine-grained control.
+class PrinterChangeNotifier {
+ public:
+  class Delegate {
+    public:
+      virtual void OnPrinterAdded() = 0;
+      virtual void OnPrinterDeleted() = 0;
+      virtual void OnPrinterChanged() = 0;
+      virtual void OnJobChanged() = 0;
+  };
+  PrinterChangeNotifier();
+  ~PrinterChangeNotifier();
+  bool StartWatching(const std::string& printer_name, Delegate* delegate);
+  bool StopWatching();
+  bool GetCurrentPrinterInfo(PrinterBasicInfo* printer_info);
+ private:
+  // Internal state maintained by the PrinterChangeNotifier class.
+  class NotificationState;
+  NotificationState* state_;
+  DISALLOW_COPY_AND_ASSIGN(PrinterChangeNotifier);
+};
+
+// This typedef is to workaround the issue with certain versions of
+// Visual Studio where it gets confused between multiple Delegate
+// classes and gives a C2500 error. (I saw this error on the try bots -
+// the workaround was not needed for my machine).
+typedef PrinterChangeNotifier::Delegate PrinterChangeNotifierDelegate;
+
+}  // namespace cloud_print
+
+#endif  // CHROME_BROWSER_PRINTING_CLOUD_PRINT_PRINTER_INFO_H_
+
diff --git a/chrome/browser/printing/cloud_print/printer_info_linux.cc b/chrome/browser/printing/cloud_print/printer_info_linux.cc
new file mode 100644
index 0000000..0715bb8
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/printer_info_linux.cc
@@ -0,0 +1,80 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/printing/cloud_print/printer_info.h"
+
+#include "base/logging.h"
+
+// TODO(sanjeevr): Implement the Linux interfaces.
+namespace cloud_print {
+
+void EnumeratePrinters(PrinterList* printer_list) {
+  DCHECK(printer_list);
+  NOTIMPLEMENTED();
+}
+
+bool GetPrinterCapsAndDefaults(const std::string& printer_name,
+                               PrinterCapsAndDefaults* printer_info) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool ValidatePrintTicket(const std::string& printer_name,
+                         const std::string& print_ticket_data) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+std::string GenerateProxyId() {
+  NOTIMPLEMENTED();
+  return std::string();
+}
+
+bool SpoolPrintJob(const std::string& print_ticket,
+                   const FilePath& print_data_file_path,
+                   const std::string& print_data_mime_type,
+                   const std::string& printer_name,
+                   const std::string& job_title,
+                   PlatformJobId* job_id_ret) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool GetJobDetails(const std::string& printer_name,
+                   PlatformJobId job_id,
+                   PrintJobDetails *job_details) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool IsValidPrinter(const std::string& printer_name) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+PrinterChangeNotifier::PrinterChangeNotifier() : state_(NULL) {
+}
+
+PrinterChangeNotifier::~PrinterChangeNotifier() {
+  StopWatching();
+}
+
+bool PrinterChangeNotifier::StartWatching(const std::string& printer_name,
+                                          Delegate* delegate) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool PrinterChangeNotifier::StopWatching() {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool PrinterChangeNotifier::GetCurrentPrinterInfo(
+    PrinterBasicInfo* printer_info) {
+  NOTIMPLEMENTED();
+  return false;
+}
+}  // namespace cloud_print
+
diff --git a/chrome/browser/printing/cloud_print/printer_info_mac.cc b/chrome/browser/printing/cloud_print/printer_info_mac.cc
new file mode 100644
index 0000000..dd0dbad
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/printer_info_mac.cc
@@ -0,0 +1,80 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/printing/cloud_print/printer_info.h"
+
+#include "base/logging.h"
+
+// TODO(sanjeevr): Implement the Mac interfaces.
+namespace cloud_print {
+
+void EnumeratePrinters(PrinterList* printer_list) {
+  DCHECK(printer_list);
+  NOTIMPLEMENTED();
+}
+
+bool GetPrinterCapsAndDefaults(const std::string& printer_name,
+                               PrinterCapsAndDefaults* printer_info) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool ValidatePrintTicket(const std::string& printer_name,
+                         const std::string& print_ticket_data) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+std::string GenerateProxyId() {
+  NOTIMPLEMENTED();
+  return std::string();
+}
+
+bool SpoolPrintJob(const std::string& print_ticket,
+                   const FilePath& print_data_file_path,
+                   const std::string& print_data_mime_type,
+                   const std::string& printer_name,
+                   const std::string& job_title,
+                   PlatformJobId* job_id_ret) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool GetJobDetails(const std::string& printer_name,
+                   PlatformJobId job_id,
+                   PrintJobDetails *job_details) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool IsValidPrinter(const std::string& printer_name) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+PrinterChangeNotifier::PrinterChangeNotifier() : state_(NULL) {
+}
+
+PrinterChangeNotifier::~PrinterChangeNotifier() {
+  StopWatching();
+}
+
+bool PrinterChangeNotifier::StartWatching(const std::string& printer_name,
+                                          Delegate* delegate) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool PrinterChangeNotifier::StopWatching() {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+bool PrinterChangeNotifier::GetCurrentPrinterInfo(
+    PrinterBasicInfo* printer_info) {
+  NOTIMPLEMENTED();
+  return false;
+}
+}  // namespace cloud_print
+
diff --git a/chrome/browser/printing/cloud_print/printer_info_win.cc b/chrome/browser/printing/cloud_print/printer_info_win.cc
new file mode 100644
index 0000000..b1ec208
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/printer_info_win.cc
@@ -0,0 +1,509 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/printing/cloud_print/printer_info.h"
+
+#include <windows.h>
+#include <objidl.h>
+#include <ocidl.h>
+#include <olectl.h>
+#include <prntvpt.h>
+#include <winspool.h>
+
+#include "base/lock.h"
+#include "base/object_watcher.h"
+#include "base/scoped_bstr_win.h"
+#include "base/scoped_comptr_win.h"
+#include "base/scoped_handle_win.h"
+#include "base/scoped_ptr.h"
+#include "base/utf_string_conversions.h"
+
+#pragma comment(lib, "prntvpt.lib")
+#pragma comment(lib, "rpcrt4.lib")
+
+namespace {
+
+class DevMode {
+ public:
+  DevMode() : dm_(NULL) {}
+  ~DevMode() { Free(); }
+
+  void Allocate(int size) {
+    Free();
+    dm_ = reinterpret_cast<DEVMODE*>(new char[size]);
+  }
+
+  void Free() {
+    if (dm_)
+      delete dm_;
+    dm_ = NULL;
+  }
+
+  DEVMODE* dm_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DevMode);
+};
+
+bool InitXPSModule() {
+  HMODULE prntvpt_module = LoadLibrary(L"prntvpt.dll");
+  return (NULL != prntvpt_module);
+}
+
+inline HRESULT GetLastErrorHR() {
+  LONG error = GetLastError();
+  return HRESULT_FROM_WIN32(error);
+}
+
+HRESULT StreamFromPrintTicket(const std::string& print_ticket,
+                              IStream** stream) {
+  DCHECK(stream);
+  HRESULT hr = CreateStreamOnHGlobal(NULL, TRUE, stream);
+  if (FAILED(hr)) {
+    return hr;
+  }
+  ULONG bytes_written = 0;
+  (*stream)->Write(print_ticket.c_str(), print_ticket.length(), &bytes_written);
+  DCHECK(bytes_written == print_ticket.length());
+  LARGE_INTEGER pos = {0};
+  ULARGE_INTEGER new_pos = {0};
+  (*stream)->Seek(pos, STREAM_SEEK_SET, &new_pos);
+  return S_OK;
+}
+
+HRESULT StreamOnHGlobalToString(IStream* stream, std::string* out) {
+  DCHECK(stream);
+  DCHECK(out);
+  HGLOBAL hdata = NULL;
+  HRESULT hr = GetHGlobalFromStream(stream, &hdata);
+  if (SUCCEEDED(hr)) {
+    DCHECK(hdata);
+    ScopedHGlobal<char> locked_data(hdata);
+    out->assign(locked_data.release(), locked_data.Size());
+  }
+  return hr;
+}
+
+HRESULT PrintTicketToDevMode(const std::string& printer_name,
+                             const std::string& print_ticket,
+                             DevMode* dev_mode) {
+  DCHECK(dev_mode);
+
+  ScopedComPtr<IStream> pt_stream;
+  HRESULT hr = StreamFromPrintTicket(print_ticket, pt_stream.Receive());
+  if (FAILED(hr))
+    return hr;
+
+  HPTPROVIDER provider = NULL;
+  hr = PTOpenProvider(UTF8ToWide(printer_name).c_str(), 1, &provider);
+  if (SUCCEEDED(hr)) {
+    ULONG size = 0;
+    DEVMODE* dm = NULL;
+    hr = PTConvertPrintTicketToDevMode(provider,
+                                       pt_stream,
+                                       kUserDefaultDevmode,
+                                       kPTDocumentScope,
+                                       &size,
+                                       &dm,
+                                       NULL);
+    if (SUCCEEDED(hr)) {
+      dev_mode->Allocate(size);
+      memcpy(dev_mode->dm_, dm, size);
+      PTReleaseMemory(dm);
+    }
+    PTCloseProvider(provider);
+  }
+  return hr;
+}
+
+HRESULT PrintPdf2DC(HDC dc, const FilePath& pdf_filename) {
+  HRESULT hr = E_NOTIMPL;
+  // TODO(sanjeevr): Implement this.
+  NOTIMPLEMENTED();
+  return hr;
+}
+
+}  // namespace
+
+namespace cloud_print {
+
+void EnumeratePrinters(PrinterList* printer_list) {
+  DCHECK(printer_list);
+  DWORD bytes_needed = 0;
+  DWORD count_returned = 0;
+  BOOL ret = EnumPrinters(PRINTER_ENUM_LOCAL|PRINTER_ENUM_CONNECTIONS, NULL, 2,
+                          NULL, 0, &bytes_needed, &count_returned);
+  if (0 != bytes_needed) {
+    scoped_ptr<BYTE> printer_info_buffer(new BYTE[bytes_needed]);
+    ret = EnumPrinters(PRINTER_ENUM_LOCAL|PRINTER_ENUM_CONNECTIONS, NULL, 2,
+                       printer_info_buffer.get(), bytes_needed, &bytes_needed,
+                       &count_returned);
+    DCHECK(ret);
+    PRINTER_INFO_2* printer_info =
+        reinterpret_cast<PRINTER_INFO_2*>(printer_info_buffer.get());
+    for (DWORD index = 0; index < count_returned; index++) {
+      PrinterBasicInfo info;
+      info.printer_name = WideToUTF8(printer_info[index].pPrinterName);
+      if (printer_info[index].pComment)
+        info.printer_description = WideToUTF8(printer_info[index].pComment);
+      info.printer_status = printer_info[index].Status;
+      printer_list->push_back(info);
+    }
+  }
+}
+
+bool GetPrinterCapsAndDefaults(const std::string& printer_name,
+                               PrinterCapsAndDefaults* printer_info) {
+  if (!InitXPSModule()) {
+    // TODO(sanjeevr): Handle legacy proxy case (with no prntvpt.dll)
+    return false;
+  }
+  if (!IsValidPrinter(printer_name)) {
+    return false;
+  }
+  DCHECK(printer_info);
+  HPTPROVIDER provider = NULL;
+  std::wstring printer_name_wide = UTF8ToWide(printer_name);
+  HRESULT hr = PTOpenProvider(printer_name_wide.c_str(), 1, &provider);
+  DCHECK(SUCCEEDED(hr));
+  if (provider) {
+    ScopedComPtr<IStream> print_capabilities_stream;
+    hr = CreateStreamOnHGlobal(NULL, TRUE,
+                               print_capabilities_stream.Receive());
+    DCHECK(SUCCEEDED(hr));
+    if (print_capabilities_stream) {
+      ScopedBstr error;
+      hr = PTGetPrintCapabilities(provider, NULL, print_capabilities_stream,
+                                  error.Receive());
+      DCHECK(SUCCEEDED(hr));
+      if (FAILED(hr)) {
+        return false;
+      }
+      hr = StreamOnHGlobalToString(print_capabilities_stream.get(),
+                                   &printer_info->printer_capabilities);
+      DCHECK(SUCCEEDED(hr));
+      printer_info->caps_mime_type = "text/xml";
+    }
+    // TODO(sanjeevr): Add ScopedPrinterHandle
+    HANDLE printer_handle = NULL;
+    OpenPrinter(const_cast<LPTSTR>(printer_name_wide.c_str()), &printer_handle,
+                NULL);
+    DCHECK(printer_handle);
+    if (printer_handle) {
+      DWORD devmode_size = DocumentProperties(
+          NULL, printer_handle, const_cast<LPTSTR>(printer_name_wide.c_str()),
+          NULL, NULL, 0);
+      DCHECK(0 != devmode_size);
+      scoped_ptr<BYTE> devmode_out_buffer(new BYTE[devmode_size]);
+      DEVMODE* devmode_out =
+          reinterpret_cast<DEVMODE*>(devmode_out_buffer.get());
+      DocumentProperties(
+          NULL, printer_handle, const_cast<LPTSTR>(printer_name_wide.c_str()),
+          devmode_out, NULL, DM_OUT_BUFFER);
+      ScopedComPtr<IStream> printer_defaults_stream;
+      hr = CreateStreamOnHGlobal(NULL, TRUE,
+                                 printer_defaults_stream.Receive());
+      DCHECK(SUCCEEDED(hr));
+      if (printer_defaults_stream) {
+        hr = PTConvertDevModeToPrintTicket(provider, devmode_size,
+                                           devmode_out, kPTJobScope,
+                                           printer_defaults_stream);
+        DCHECK(SUCCEEDED(hr));
+        if (SUCCEEDED(hr)) {
+          hr = StreamOnHGlobalToString(printer_defaults_stream.get(),
+                                       &printer_info->printer_defaults);
+          DCHECK(SUCCEEDED(hr));
+          printer_info->defaults_mime_type = "text/xml";
+        }
+      }
+      ClosePrinter(printer_handle);
+    }
+    PTCloseProvider(provider);
+  }
+  return true;
+}
+
+bool ValidatePrintTicket(const std::string& printer_name,
+                         const std::string& print_ticket_data) {
+  if (!InitXPSModule()) {
+    // TODO(sanjeevr): Handle legacy proxy case (with no prntvpt.dll)
+    return false;
+  }
+  bool ret = false;
+  HPTPROVIDER provider = NULL;
+  PTOpenProvider(UTF8ToWide(printer_name.c_str()).c_str(), 1, &provider);
+  if (provider) {
+    ScopedComPtr<IStream> print_ticket_stream;
+    CreateStreamOnHGlobal(NULL, TRUE, print_ticket_stream.Receive());
+    ULONG bytes_written = 0;
+    print_ticket_stream->Write(print_ticket_data.c_str(),
+                               print_ticket_data.length(),
+                               &bytes_written);
+    DCHECK(bytes_written == print_ticket_data.length());
+    LARGE_INTEGER pos = {0};
+    ULARGE_INTEGER new_pos = {0};
+    print_ticket_stream->Seek(pos, STREAM_SEEK_SET, &new_pos);
+    ScopedBstr error;
+    ScopedComPtr<IStream> result_ticket_stream;
+    CreateStreamOnHGlobal(NULL, TRUE, result_ticket_stream.Receive());
+    ret = SUCCEEDED(PTMergeAndValidatePrintTicket(provider,
+                                                  print_ticket_stream.get(),
+                                                  NULL,
+                                                  kPTJobScope,
+                                                  result_ticket_stream.get(),
+                                                  error.Receive()));
+    PTCloseProvider(provider);
+  }
+  return ret;
+}
+
+std::string GenerateProxyId() {
+  GUID proxy_id = {0};
+  HRESULT hr = UuidCreate(&proxy_id);
+  DCHECK(SUCCEEDED(hr));
+  wchar_t* proxy_id_as_string = NULL;
+  UuidToString(&proxy_id, reinterpret_cast<RPC_WSTR *>(&proxy_id_as_string));
+  DCHECK(proxy_id_as_string);
+  std::string ret;
+  WideToUTF8(proxy_id_as_string, wcslen(proxy_id_as_string), &ret);
+  RpcStringFree(reinterpret_cast<RPC_WSTR *>(&proxy_id_as_string));
+  return ret;
+}
+
+bool SpoolPrintJob(const std::string& print_ticket,
+                   const FilePath& print_data_file_path,
+                   const std::string& print_data_mime_type,
+                   const std::string& printer_name,
+                   const std::string& job_title,
+                   PlatformJobId* job_id_ret) {
+  if (!InitXPSModule()) {
+    // TODO(sanjeevr): Handle legacy proxy case (with no prntvpt.dll)
+    return false;
+  }
+  DevMode pt_dev_mode;
+  HRESULT hr = PrintTicketToDevMode(printer_name, print_ticket, &pt_dev_mode);
+  if (FAILED(hr)) {
+    NOTREACHED();
+    return false;
+  }
+  ScopedHDC dc(CreateDC(L"WINSPOOL", UTF8ToWide(printer_name).c_str(), NULL,
+                        pt_dev_mode.dm_));
+  if (!dc.Get()) {
+    NOTREACHED();
+    return false;
+  }
+  hr = E_FAIL;
+  DOCINFO di = {0};
+  di.cbSize = sizeof(DOCINFO);
+  std::wstring doc_name = UTF8ToWide(job_title);
+  di.lpszDocName = doc_name.c_str();
+  int job_id = StartDoc(dc.Get(), &di);
+  if (SP_ERROR != job_id) {
+    if (print_data_mime_type == "application/pdf") {
+      hr = PrintPdf2DC(dc.Get(), print_data_file_path);
+    } else {
+      NOTREACHED();
+    }
+    EndDoc(dc.Get());
+    if (SUCCEEDED(hr) && job_id_ret) {
+      *job_id_ret = job_id;
+    }
+  }
+  return SUCCEEDED(hr);
+}
+
+bool GetJobDetails(const std::string& printer_name,
+                   PlatformJobId job_id,
+                   PrintJobDetails *job_details) {
+  DCHECK(job_details);
+  HANDLE printer_handle = NULL;
+  std::wstring printer_name_wide = UTF8ToWide(printer_name);
+  OpenPrinter(const_cast<LPTSTR>(printer_name_wide.c_str()), &printer_handle,
+              NULL);
+  DCHECK(printer_handle);
+  bool ret = false;
+  if (printer_handle) {
+    DWORD bytes_needed = 0;
+    GetJob(printer_handle, job_id, 1, NULL, 0, &bytes_needed);
+    DWORD last_error = GetLastError();
+    if (ERROR_INVALID_PARAMETER != last_error) {
+      // ERROR_INVALID_PARAMETER normally means that the job id is not valid.
+      DCHECK(last_error == ERROR_INSUFFICIENT_BUFFER);
+      scoped_ptr<BYTE> job_info_buffer(new BYTE[bytes_needed]);
+      if (GetJob(printer_handle, job_id, 1, job_info_buffer.get(), bytes_needed,
+                &bytes_needed)) {
+        JOB_INFO_1 *job_info =
+            reinterpret_cast<JOB_INFO_1 *>(job_info_buffer.get());
+        if (job_info->pStatus) {
+          WideToUTF8(job_info->pStatus, wcslen(job_info->pStatus),
+                     &job_details->status_message);
+        }
+        job_details->platform_status_flags = job_info->Status;
+        if ((job_info->Status & JOB_STATUS_COMPLETE) ||
+            (job_info->Status & JOB_STATUS_PRINTED)) {
+          job_details->status = PRINT_JOB_STATUS_COMPLETED;
+        } else if (job_info->Status & JOB_STATUS_ERROR) {
+          job_details->status = PRINT_JOB_STATUS_ERROR;
+        } else {
+          job_details->status = PRINT_JOB_STATUS_IN_PROGRESS;
+        }
+        job_details->total_pages = job_info->TotalPages;
+        job_details->pages_printed = job_info->PagesPrinted;
+        ret = true;
+      }
+    }
+    ClosePrinter(printer_handle);
+  }
+  return ret;
+}
+
+bool IsValidPrinter(const std::string& printer_name) {
+  std::wstring printer_name_wide = UTF8ToWide(printer_name);
+  HANDLE printer_handle = NULL;
+  OpenPrinter(const_cast<LPTSTR>(printer_name_wide.c_str()), &printer_handle,
+              NULL);
+  bool ret = false;
+  if (printer_handle) {
+    ret = true;
+    ClosePrinter(printer_handle);
+  }
+  return ret;
+}
+
+class PrinterChangeNotifier::NotificationState
+    : public base::ObjectWatcher::Delegate {
+ public:
+  NotificationState() : printer_(NULL), printer_change_(NULL), delegate_(NULL) {
+  }
+  ~NotificationState() {
+    Stop();
+  }
+  bool Start(const std::string& printer_name,
+             PrinterChangeNotifier::Delegate* delegate) {
+    delegate_ = delegate;
+    // An empty printer name means watch the current server, we need to pass
+    // NULL to OpenPrinter.
+    LPTSTR printer_name_to_use = NULL;
+    std::wstring printer_name_wide;
+    if (!printer_name.empty()) {
+      printer_name_wide = UTF8ToWide(printer_name);
+      printer_name_to_use = const_cast<LPTSTR>(printer_name_wide.c_str());
+    }
+    bool ret = false;
+    OpenPrinter(printer_name_to_use, &printer_, NULL);
+    if (printer_) {
+      printer_change_ = FindFirstPrinterChangeNotification(
+          printer_, PRINTER_CHANGE_PRINTER|PRINTER_CHANGE_JOB, 0, NULL);
+      if (printer_change_) {
+        ret = watcher_.StartWatching(printer_change_, this);
+      }
+    }
+    if (!ret) {
+      Stop();
+    }
+    return ret;
+  }
+  bool Stop() {
+    watcher_.StopWatching();
+    if (printer_) {
+      ClosePrinter(printer_);
+      printer_ = NULL;
+    }
+    if (printer_change_) {
+      FindClosePrinterChangeNotification(printer_change_);
+      printer_change_ = NULL;
+    }
+    return true;
+  }
+
+  void OnObjectSignaled(HANDLE object) {
+    DWORD change = 0;
+    FindNextPrinterChangeNotification(object, &change, NULL, NULL);
+
+    if (change != ((PRINTER_CHANGE_PRINTER|PRINTER_CHANGE_JOB) &
+                  (~PRINTER_CHANGE_FAILED_CONNECTION_PRINTER))) {
+      // For printer connections, we get spurious change notifications with
+      // all flags set except PRINTER_CHANGE_FAILED_CONNECTION_PRINTER.
+      // Ignore these.
+      if (change & PRINTER_CHANGE_ADD_PRINTER) {
+        delegate_->OnPrinterAdded();
+      } else if (change & PRINTER_CHANGE_DELETE_PRINTER) {
+        delegate_->OnPrinterDeleted();
+      } else if (change & PRINTER_CHANGE_SET_PRINTER) {
+        delegate_->OnPrinterChanged();
+      }
+      if (change & PRINTER_CHANGE_JOB) {
+        delegate_->OnJobChanged();
+      }
+    }
+    watcher_.StartWatching(printer_change_, this);
+  }
+  HANDLE printer_handle() const {
+    return printer_;
+  }
+ private:
+  base::ObjectWatcher watcher_;
+  HANDLE printer_;            // The printer being watched
+  HANDLE printer_change_;     // Returned by FindFirstPrinterChangeNotifier
+  PrinterChangeNotifier::Delegate* delegate_;  // Delegate to notify
+  bool did_signal_;           // DoneWaiting was called
+};
+
+PrinterChangeNotifier::PrinterChangeNotifier() : state_(NULL) {
+}
+
+PrinterChangeNotifier::~PrinterChangeNotifier() {
+  StopWatching();
+}
+
+bool PrinterChangeNotifier::StartWatching(const std::string& printer_name,
+                                          Delegate* delegate) {
+  if (state_) {
+    NOTREACHED();
+    return false;
+  }
+  state_ = new NotificationState;
+  if (!state_->Start(printer_name, delegate)) {
+    StopWatching();
+    return false;
+  }
+  return true;
+}
+
+bool PrinterChangeNotifier::StopWatching() {
+  if (!state_) {
+    return false;
+  }
+  state_->Stop();
+  delete state_;
+  state_ = NULL;
+  return true;
+}
+
+bool PrinterChangeNotifier::GetCurrentPrinterInfo(
+    PrinterBasicInfo* printer_info) {
+  if (!state_) {
+    return false;
+  }
+  DCHECK(printer_info);
+  DWORD bytes_needed = 0;
+  bool ret = false;
+  GetPrinter(state_->printer_handle(), 2, NULL, 0, &bytes_needed);
+  if (0 != bytes_needed) {
+    scoped_ptr<BYTE> printer_info_buffer(new BYTE[bytes_needed]);
+    if (GetPrinter(state_->printer_handle(), 2, printer_info_buffer.get(),
+                   bytes_needed, &bytes_needed)) {
+      PRINTER_INFO_2* printer_info_win =
+          reinterpret_cast<PRINTER_INFO_2*>(printer_info_buffer.get());
+      printer_info->printer_name = WideToUTF8(printer_info_win->pPrinterName);
+      printer_info->printer_description =
+          WideToUTF8(printer_info_win->pComment);
+      printer_info->printer_status = printer_info_win->Status;
+      ret = true;
+    }
+  }
+  return ret;
+}
+}  // namespace cloud_print
+
diff --git a/chrome/browser/printing/cloud_print/printer_job_handler.cc b/chrome/browser/printing/cloud_print/printer_job_handler.cc
new file mode 100644
index 0000000..a27fdf0
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/printer_job_handler.cc
@@ -0,0 +1,560 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/printing/cloud_print/printer_job_handler.h"
+
+#include "base/file_util.h"
+#include "base/json/json_reader.h"
+#include "base/md5.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_consts.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_helpers.h"
+#include "chrome/browser/printing/cloud_print/job_status_updater.h"
+#include "googleurl/src/gurl.h"
+#include "net/http/http_response_headers.h"
+
+PrinterJobHandler::PrinterJobHandler(
+    const cloud_print::PrinterBasicInfo& printer_info,
+    const std::string& printer_id,
+    const std::string& caps_hash,
+    const std::string& auth_token,
+    Delegate* delegate)
+    : printer_info_(printer_info),
+      printer_id_(printer_id),
+      auth_token_(auth_token),
+      last_caps_hash_(caps_hash),
+      delegate_(delegate),
+      local_job_id_(-1),
+      next_response_handler_(NULL),
+      server_error_count_(0),
+      print_thread_("Chrome_CloudPrintJobPrintThread"),
+      shutting_down_(false),
+      server_job_available_(false),
+      printer_update_pending_(true),
+      printer_delete_pending_(false),
+      task_in_progress_(false) {
+}
+
+bool PrinterJobHandler::Initialize() {
+  if (cloud_print::IsValidPrinter(printer_info_.printer_name)) {
+    printer_change_notifier_.StartWatching(printer_info_.printer_name, this);
+    NotifyJobAvailable();
+  } else {
+    // This printer does not exist any more. Delete it from the server.
+    OnPrinterDeleted();
+  }
+  return true;
+}
+
+PrinterJobHandler::~PrinterJobHandler() {
+  printer_change_notifier_.StopWatching();
+}
+
+void PrinterJobHandler::Reset() {
+  print_data_url_.clear();
+  job_details_.Clear();
+  request_.reset();
+  print_thread_.Stop();
+}
+
+void PrinterJobHandler::Start() {
+  if (task_in_progress_) {
+    // Multiple Starts can get posted because of multiple notifications
+    // We want to ignore the other ones that happen when a task is in progress.
+    return;
+  }
+  Reset();
+  if (!shutting_down_) {
+    // Check if we have work to do.
+    if (HavePendingTasks()) {
+      if (printer_delete_pending_) {
+        printer_delete_pending_ = false;
+        task_in_progress_ = true;
+        MakeServerRequest(
+            CloudPrintHelpers::GetUrlForPrinterDelete(printer_id_),
+            &PrinterJobHandler::HandlePrinterDeleteResponse);
+      }
+      if (!task_in_progress_ && printer_update_pending_) {
+        printer_update_pending_ = false;
+        task_in_progress_ = UpdatePrinterInfo();
+      }
+      if (!task_in_progress_ && server_job_available_) {
+        task_in_progress_ = true;
+        server_job_available_ = false;
+        // We need to fetch any pending jobs for this printer
+        MakeServerRequest(CloudPrintHelpers::GetUrlForJobFetch(printer_id_),
+                          &PrinterJobHandler::HandleJobMetadataResponse);
+      }
+    }
+  }
+}
+
+void PrinterJobHandler::Stop() {
+  task_in_progress_ = false;
+  Reset();
+  if (HavePendingTasks()) {
+    MessageLoop::current()->PostTask(
+        FROM_HERE, NewRunnableMethod(this, &PrinterJobHandler::Start));
+  }
+}
+
+void PrinterJobHandler::NotifyJobAvailable() {
+  server_job_available_ = true;
+  if (!task_in_progress_) {
+    MessageLoop::current()->PostTask(
+        FROM_HERE, NewRunnableMethod(this, &PrinterJobHandler::Start));
+  }
+}
+
+bool PrinterJobHandler::UpdatePrinterInfo() {
+  // We need to update the parts of the printer info that have changed
+  // (could be printer name, description, status or capabilities).
+  cloud_print::PrinterBasicInfo printer_info;
+  printer_change_notifier_.GetCurrentPrinterInfo(&printer_info);
+  cloud_print::PrinterCapsAndDefaults printer_caps;
+  std::string post_data;
+  std::string mime_boundary;
+  if (cloud_print::GetPrinterCapsAndDefaults(printer_info.printer_name,
+                                             &printer_caps)) {
+    std::string caps_hash = MD5String(printer_caps.printer_capabilities);
+    CloudPrintHelpers::CreateMimeBoundaryForUpload(&mime_boundary);
+    if (caps_hash != last_caps_hash_) {
+      // Hashes don't match, we need to upload new capabilities (the defaults
+      // go for free along with the capabilities)
+      last_caps_hash_ = caps_hash;
+      CloudPrintHelpers::AddMultipartValueForUpload(
+          kPrinterCapsValue, printer_caps.printer_capabilities,
+          mime_boundary, printer_caps.caps_mime_type, &post_data);
+      CloudPrintHelpers::AddMultipartValueForUpload(
+          kPrinterDefaultsValue, printer_caps.printer_defaults,
+          mime_boundary, printer_caps.defaults_mime_type,
+          &post_data);
+      CloudPrintHelpers::AddMultipartValueForUpload(
+          WideToUTF8(kPrinterCapsHashValue).c_str(), caps_hash, mime_boundary,
+          std::string(), &post_data);
+    }
+  }
+  if (printer_info.printer_name != printer_info_.printer_name) {
+    CloudPrintHelpers::AddMultipartValueForUpload(kPrinterNameValue,
+                                                  printer_info.printer_name,
+                                                  mime_boundary,
+                                                  std::string(), &post_data);
+  }
+  if (printer_info.printer_description != printer_info_.printer_description) {
+    CloudPrintHelpers::AddMultipartValueForUpload(
+        kPrinterDescValue, printer_info.printer_description, mime_boundary,
+        std::string() , &post_data);
+  }
+  if (printer_info.printer_status != printer_info_.printer_status) {
+    CloudPrintHelpers::AddMultipartValueForUpload(
+        kPrinterStatusValue, StringPrintf("%d", printer_info.printer_status),
+        mime_boundary, std::string(), &post_data);
+  }
+  printer_info_ = printer_info;
+  bool ret = false;
+  if (!post_data.empty()) {
+    // Terminate the request body
+    post_data.append("--" + mime_boundary + "--\r\n");
+    std::string mime_type("multipart/form-data; boundary=");
+    mime_type += mime_boundary;
+    request_.reset(
+        new URLFetcher(CloudPrintHelpers::GetUrlForPrinterUpdate(printer_id_),
+                       URLFetcher::POST, this));
+    CloudPrintHelpers::PrepCloudPrintRequest(request_.get(), auth_token_);
+    request_->set_upload_data(mime_type, post_data);
+    next_response_handler_ = &PrinterJobHandler::HandlePrinterUpdateResponse;
+    request_->Start();
+    ret = true;
+  }
+  return ret;
+}
+
+// URLFetcher::Delegate implementation.
+void PrinterJobHandler::OnURLFetchComplete(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  if (!shutting_down_) {
+    DCHECK(source == request_.get());
+    // We need a next response handler because we are strictly a sequential
+    // state machine. We need each response handler to tell us which state to
+    //  advance to next.
+    DCHECK(next_response_handler_);
+    if (!(this->*next_response_handler_)(source, url, status,
+                                         response_code, cookies, data)) {
+      // By contract, if the response handler returns false, it wants us to
+      // retry the request (upto the usual limit after which we give up and
+      // send the state machine to the Stop state);
+      HandleServerError(url);
+    }
+  }
+}
+
+// JobStatusUpdater::Delegate implementation
+bool PrinterJobHandler::OnJobCompleted(JobStatusUpdater* updater) {
+  bool ret = false;
+  for (JobStatusUpdaterList::iterator index = job_status_updater_list_.begin();
+       index != job_status_updater_list_.end(); index++) {
+    if (index->get() == updater) {
+      job_status_updater_list_.erase(index);
+      ret = true;
+      break;
+    }
+  }
+  return ret;
+}
+
+  // cloud_print::PrinterChangeNotifier::Delegate implementation
+void PrinterJobHandler::OnPrinterAdded() {
+  // Should never get this notification for a printer
+  NOTREACHED();
+}
+
+void PrinterJobHandler::OnPrinterDeleted() {
+  printer_delete_pending_ = true;
+  if (!task_in_progress_) {
+    MessageLoop::current()->PostTask(
+        FROM_HERE, NewRunnableMethod(this, &PrinterJobHandler::Start));
+  }
+}
+
+void PrinterJobHandler::OnPrinterChanged() {
+  printer_update_pending_ = true;
+  if (!task_in_progress_) {
+    MessageLoop::current()->PostTask(
+        FROM_HERE, NewRunnableMethod(this, &PrinterJobHandler::Start));
+  }
+}
+
+void PrinterJobHandler::OnJobChanged() {
+  // Some job on the printer changed. Loop through all our JobStatusUpdaters
+  // and have them check for updates.
+  for (JobStatusUpdaterList::iterator index = job_status_updater_list_.begin();
+       index != job_status_updater_list_.end(); index++) {
+    MessageLoop::current()->PostTask(
+        FROM_HERE, NewRunnableMethod(index->get(),
+                                     &JobStatusUpdater::UpdateStatus));
+  }
+}
+
+bool PrinterJobHandler::HandlePrinterUpdateResponse(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  bool ret = false;
+  // If there was a network error or a non-200 response (which, for our purposes
+  // is the same as a network error), we want to retry.
+  if (status.is_success() && (response_code == 200)) {
+    bool succeeded = false;
+    DictionaryValue* response_dict = NULL;
+    CloudPrintHelpers::ParseResponseJSON(data, &succeeded, &response_dict);
+    // If we get valid JSON back, we are done.
+    if (NULL != response_dict) {
+      ret = true;
+    }
+  }
+  if (ret) {
+    // We are done here. Go to the Stop state
+    MessageLoop::current()->PostTask(
+        FROM_HERE, NewRunnableMethod(this, &PrinterJobHandler::Stop));
+  } else {
+    // Since we failed to update the server, set the flag again.
+    printer_update_pending_ = true;
+  }
+  return ret;
+}
+
+bool PrinterJobHandler::HandlePrinterDeleteResponse(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  bool ret = false;
+  // If there was a network error or a non-200 response (which, for our purposes
+  // is the same as a network error), we want to retry.
+  if (status.is_success() && (response_code == 200)) {
+    bool succeeded = false;
+    DictionaryValue* response_dict = NULL;
+    CloudPrintHelpers::ParseResponseJSON(data, &succeeded, &response_dict);
+    // If we get valid JSON back, we are done.
+    if (NULL != response_dict) {
+      ret = true;
+    }
+  }
+  if (ret) {
+    // The printer has been deleted. Shutdown the handler class.
+    MessageLoop::current()->PostTask(
+        FROM_HERE, NewRunnableMethod(this, &PrinterJobHandler::Shutdown));
+  } else {
+    // Since we failed to update the server, set the flag again.
+    printer_delete_pending_ = true;
+  }
+  return ret;
+}
+
+bool PrinterJobHandler::HandleJobMetadataResponse(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  // If there was a network error or a non-200 response (which, for our purposes
+  // is the same as a network error), we want to retry.
+  if (!status.is_success() || (response_code != 200)) {
+    return false;
+  }
+  bool succeeded = false;
+  DictionaryValue* response_dict = NULL;
+  CloudPrintHelpers::ParseResponseJSON(data, &succeeded, &response_dict);
+  if (NULL == response_dict) {
+    // If we did not get a valid JSON response, we need to retry.
+    return false;
+  }
+  Task* next_task = NULL;
+  if (succeeded) {
+    ListValue* job_list = NULL;
+    response_dict->GetList(kJobListValue, &job_list);
+    if (job_list) {
+      // Even though it is a job list, for now we are only interested in the
+      // first job
+      DictionaryValue* job_data = NULL;
+      if (job_list->GetDictionary(0, &job_data)) {
+        job_data->GetString(kIdValue, &job_details_.job_id_);
+        job_data->GetString(kTitleValue, &job_details_.job_title_);
+        std::string print_ticket_url;
+        job_data->GetString(kTicketUrlValue, &print_ticket_url);
+        job_data->GetString(kFileUrlValue, &print_data_url_);
+        next_task = NewRunnableMethod(
+              this, &PrinterJobHandler::MakeServerRequest,
+              GURL(print_ticket_url.c_str()),
+              &PrinterJobHandler::HandlePrintTicketResponse);
+      }
+    }
+  }
+  if (!next_task) {
+    // If we got a valid JSON but there were no jobs, we are done
+    next_task = NewRunnableMethod(this, &PrinterJobHandler::Stop);
+  }
+  delete response_dict;
+  DCHECK(next_task);
+  MessageLoop::current()->PostTask(FROM_HERE, next_task);
+  return true;
+}
+
+bool PrinterJobHandler::HandlePrintTicketResponse(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  // If there was a network error or a non-200 response (which, for our purposes
+  // is the same as a network error), we want to retry.
+  if (!status.is_success() || (response_code != 200)) {
+    return false;
+  }
+  if (cloud_print::ValidatePrintTicket(printer_info_.printer_name, data)) {
+    job_details_.print_ticket_ = data;
+    MessageLoop::current()->PostTask(
+        FROM_HERE,
+        NewRunnableMethod(this,
+                          &PrinterJobHandler::MakeServerRequest,
+                          GURL(print_data_url_.c_str()),
+                          &PrinterJobHandler::HandlePrintDataResponse));
+  } else {
+    // The print ticket was not valid. We are done here.
+    MessageLoop::current()->PostTask(
+        FROM_HERE, NewRunnableMethod(this, &PrinterJobHandler::JobFailed,
+                                     INVALID_JOB_DATA));
+  }
+  return true;
+}
+
+bool PrinterJobHandler::HandlePrintDataResponse(const URLFetcher* source,
+                                                const GURL& url,
+                                                const URLRequestStatus& status,
+                                                int response_code,
+                                                const ResponseCookies& cookies,
+                                                const std::string& data) {
+  // If there was a network error or a non-200 response (which, for our purposes
+  // is the same as a network error), we want to retry.
+  if (!status.is_success() || (response_code != 200)) {
+    return false;
+  }
+  Task* next_task = NULL;
+  if (file_util::CreateTemporaryFile(&job_details_.print_data_file_path_)) {
+    int ret = file_util::WriteFile(job_details_.print_data_file_path_,
+                                   data.c_str(),
+                                   data.length());
+    source->response_headers()->GetMimeType(
+        &job_details_.print_data_mime_type_);
+    DCHECK(ret == static_cast<int>(data.length()));
+    if (ret == static_cast<int>(data.length())) {
+      next_task = NewRunnableMethod(this, &PrinterJobHandler::StartPrinting);
+    }
+  }
+  // If there was no task allocated above, then there was an error in
+  // saving the print data, bail out here.
+  if (!next_task) {
+    next_task = NewRunnableMethod(this, &PrinterJobHandler::JobFailed,
+                                  JOB_DOWNLOAD_FAILED);
+  }
+  MessageLoop::current()->PostTask(FROM_HERE, next_task);
+  return true;
+}
+
+void PrinterJobHandler::StartPrinting() {
+  // We are done with the request object for now.
+  request_.reset();
+  if (!shutting_down_) {
+    if (!print_thread_.Start()) {
+      JobFailed(PRINT_FAILED);
+    } else {
+      print_thread_.message_loop()->PostTask(
+          FROM_HERE, NewRunnableFunction(&PrinterJobHandler::DoPrint,
+                                         job_details_,
+                                         printer_info_.printer_name, this,
+                                         MessageLoop::current()));
+    }
+  }
+}
+
+void PrinterJobHandler::JobFailed(PrintJobError error) {
+  if (!shutting_down_) {
+    UpdateJobStatus(cloud_print::PRINT_JOB_STATUS_ERROR, error);
+  }
+}
+
+void PrinterJobHandler::JobSpooled(cloud_print::PlatformJobId local_job_id) {
+  if (!shutting_down_) {
+    local_job_id_ = local_job_id;
+    UpdateJobStatus(cloud_print::PRINT_JOB_STATUS_IN_PROGRESS, SUCCESS);
+    print_thread_.Stop();
+  }
+}
+
+void PrinterJobHandler::Shutdown() {
+  Reset();
+  shutting_down_ = true;
+  while (!job_status_updater_list_.empty()) {
+    // Calling Stop() will cause the OnJobCompleted to be called which will
+    // remove the updater object from the list.
+    job_status_updater_list_.front()->Stop();
+  }
+  if (delegate_) {
+    delegate_->OnPrinterJobHandlerShutdown(this, printer_id_);
+  }
+}
+
+void PrinterJobHandler::HandleServerError(const GURL& url) {
+  Task* task_to_retry = NewRunnableMethod(this,
+                                          &PrinterJobHandler::MakeServerRequest,
+                                          url, next_response_handler_);
+  Task* task_on_give_up = NewRunnableMethod(this, &PrinterJobHandler::Stop);
+  CloudPrintHelpers::HandleServerError(&server_error_count_, kMaxRetryCount,
+                                       -1, kBaseRetryInterval, task_to_retry,
+                                       task_on_give_up);
+}
+
+void PrinterJobHandler::UpdateJobStatus(cloud_print::PrintJobStatus status,
+                                        PrintJobError error) {
+  if (!shutting_down_) {
+    if (!job_details_.job_id_.empty()) {
+      ResponseHandler response_handler = NULL;
+      if (error == SUCCESS) {
+        response_handler =
+            &PrinterJobHandler::HandleSuccessStatusUpdateResponse;
+      } else {
+        response_handler =
+            &PrinterJobHandler::HandleFailureStatusUpdateResponse;
+      }
+      MakeServerRequest(
+          CloudPrintHelpers::GetUrlForJobStatusUpdate(job_details_.job_id_,
+                                                      status),
+          response_handler);
+    }
+  }
+}
+
+bool PrinterJobHandler::HandleSuccessStatusUpdateResponse(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  // If there was a network error or a non-200 response (which, for our purposes
+  // is the same as a network error), we want to retry.
+  if (!status.is_success() || (response_code != 200)) {
+    return false;
+  }
+  // The print job has been spooled locally. We now need to create an object
+  // that monitors the status of the job and updates the server.
+  scoped_refptr<JobStatusUpdater> job_status_updater =
+      new JobStatusUpdater(printer_info_.printer_name, job_details_.job_id_,
+                           local_job_id_, auth_token_, this);
+  job_status_updater_list_.push_back(job_status_updater);
+  MessageLoop::current()->PostTask(
+      FROM_HERE, NewRunnableMethod(job_status_updater.get(),
+                                   &JobStatusUpdater::UpdateStatus));
+  bool succeeded = false;
+  CloudPrintHelpers::ParseResponseJSON(data, &succeeded, NULL);
+  if (succeeded) {
+    // Since we just printed successfully, we want to look for more jobs.
+    server_job_available_ = true;
+  }
+  MessageLoop::current()->PostTask(
+      FROM_HERE, NewRunnableMethod(this, &PrinterJobHandler::Stop));
+  return true;
+}
+
+bool PrinterJobHandler::HandleFailureStatusUpdateResponse(
+    const URLFetcher* source, const GURL& url, const URLRequestStatus& status,
+    int response_code, const ResponseCookies& cookies,
+    const std::string& data) {
+  // If there was a network error or a non-200 response (which, for our purposes
+  // is the same as a network error), we want to retry.
+  if (!status.is_success() || (response_code != 200)) {
+    return false;
+  }
+  MessageLoop::current()->PostTask(
+      FROM_HERE, NewRunnableMethod(this, &PrinterJobHandler::Stop));
+  return true;
+}
+
+void PrinterJobHandler::MakeServerRequest(const GURL& url,
+                                          ResponseHandler response_handler) {
+  if (!shutting_down_) {
+    request_.reset(new URLFetcher(url, URLFetcher::GET, this));
+    server_error_count_ = 0;
+    CloudPrintHelpers::PrepCloudPrintRequest(request_.get(), auth_token_);
+    // Set up the next response handler
+    next_response_handler_ = response_handler;
+    request_->Start();
+  }
+}
+
+bool PrinterJobHandler::HavePendingTasks() {
+  return server_job_available_ || printer_update_pending_ ||
+         printer_delete_pending_;
+}
+
+
+void PrinterJobHandler::DoPrint(const JobDetails& job_details,
+                                const std::string& printer_name,
+                                PrinterJobHandler* job_handler,
+                                MessageLoop* job_message_loop) {
+  DCHECK(job_handler);
+  DCHECK(job_message_loop);
+  cloud_print::PlatformJobId job_id = -1;
+  if (cloud_print::SpoolPrintJob(job_details.print_ticket_,
+                                 job_details.print_data_file_path_,
+                                 job_details.print_data_mime_type_,
+                                 printer_name,
+                                 job_details.job_title_, &job_id)) {
+    job_message_loop->PostTask(FROM_HERE,
+                               NewRunnableMethod(job_handler,
+                                                 &PrinterJobHandler::JobSpooled,
+                                                 job_id));
+  } else {
+    job_message_loop->PostTask(FROM_HERE,
+                               NewRunnableMethod(job_handler,
+                                                 &PrinterJobHandler::JobFailed,
+                                                 PRINT_FAILED));
+  }
+}
+
diff --git a/chrome/browser/printing/cloud_print/printer_job_handler.h b/chrome/browser/printing/cloud_print/printer_job_handler.h
new file mode 100644
index 0000000..15e5cd5
--- /dev/null
+++ b/chrome/browser/printing/cloud_print/printer_job_handler.h
@@ -0,0 +1,240 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_PRINTING_CLOUD_PRINT_PRINTER_JOB_HANDLER_H_
+#define CHROME_BROWSER_PRINTING_CLOUD_PRINT_PRINTER_JOB_HANDLER_H_
+
+#include <list>
+#include <string>
+
+#include "base/file_path.h"
+#include "base/ref_counted.h"
+#include "base/thread.h"
+#include "chrome/browser/printing/cloud_print/job_status_updater.h"
+#include "chrome/browser/printing/cloud_print/printer_info.h"
+#include "chrome/browser/net/url_fetcher.h"
+#include "net/url_request/url_request_status.h"
+
+// A class that handles cloud print jobs for a particular printer. This class
+// imlements a state machine that transitions from Start to various states. The
+// various states are shown in the below diagram.
+// the status on the server.
+
+//                            Start --> No pending tasks --> Done
+//                              |
+//                              |
+//                              | Have Pending tasks
+//                              |
+//                              |
+//       <----Delete Pending -- | ---Update Pending----->
+//       |                      |                       |
+//       |                      |                       |
+//       |                      |                       |
+// Delete Printer from server   |                 Update Printer info on server
+//   Shutdown                   |                      Go to Stop
+//                              |
+//                              | Job Available
+//                              |
+//                              |
+//                        Fetch Next Job Metadata
+//                        Fetch Print Ticket
+//                        Fetch Print Data
+//                        Spool Print Job
+//                        Create Job StatusUpdater for job
+//                        Mark job as "in progress" on server
+//     (On any unrecoverable error in any of the above steps go to Stop)
+//                        Go to Stop
+//                              |
+//                              |
+//                              |
+//                              |
+//                              |
+//                              |
+//                              |
+//                             Stop
+//               (If there are pending tasks go back to Start)
+
+typedef URLFetcher::Delegate URLFetcherDelegate;
+
+class PrinterJobHandler : public base::RefCountedThreadSafe<PrinterJobHandler>,
+                          public URLFetcherDelegate,
+                          public JobStatusUpdaterDelegate,
+                          public cloud_print::PrinterChangeNotifierDelegate {
+  enum PrintJobError {
+    SUCCESS,
+    JOB_DOWNLOAD_FAILED,
+    INVALID_JOB_DATA,
+    PRINT_FAILED,
+  };
+  struct JobDetails {
+    std::string job_id_;
+    std::string job_title_;
+    std::string print_ticket_;
+    FilePath print_data_file_path_;
+    std::string print_data_mime_type_;
+    void Clear() {
+      job_id_.clear();
+      job_title_.clear();
+      print_ticket_.clear();
+      print_data_mime_type_.clear();
+      print_data_file_path_ = FilePath();
+    }
+  };
+
+ public:
+  class Delegate {
+   public:
+     virtual void OnPrinterJobHandlerShutdown(
+        PrinterJobHandler* job_handler, const std::string& printer_id) = 0;
+  };
+
+  // Begin public interface
+  PrinterJobHandler(const cloud_print::PrinterBasicInfo& printer_info,
+                  const std::string& printer_id,
+                  const std::string& caps_hash,
+                  const std::string& auth_token,
+                  Delegate* delegate);
+  ~PrinterJobHandler();
+  bool Initialize();
+  // Notifies the JobHandler that a job is available
+  void NotifyJobAvailable();
+  // Shutdown everything (the process is exiting).
+  void Shutdown();
+  // End public interface
+
+  // Begin Delegate implementations
+
+  // URLFetcher::Delegate implementation.
+  virtual void OnURLFetchComplete(const URLFetcher* source, const GURL& url,
+                                  const URLRequestStatus& status,
+                                  int response_code,
+                                  const ResponseCookies& cookies,
+                                  const std::string& data);
+  // JobStatusUpdater::Delegate implementation
+  virtual bool OnJobCompleted(JobStatusUpdater* updater);
+  // cloud_print::PrinterChangeNotifier::Delegate implementation
+  virtual void OnPrinterAdded();
+  virtual void OnPrinterDeleted();
+  virtual void OnPrinterChanged();
+  virtual void OnJobChanged();
+
+  // End Delegate implementations
+
+ private:
+  // Prototype for a response handler. The return value indicates whether the
+  // request should be retried, false means "retry", true means "do not retry"
+  typedef bool (PrinterJobHandler::*ResponseHandler)(
+      const URLFetcher* source, const GURL& url,
+      const URLRequestStatus& status, int response_code,
+      const ResponseCookies& cookies, const std::string& data);
+  // Begin request handlers for each state in the state machine
+  bool HandlePrinterUpdateResponse(const URLFetcher* source, const GURL& url,
+                                   const URLRequestStatus& status,
+                                   int response_code,
+                                   const ResponseCookies& cookies,
+                                   const std::string& data);
+  bool HandlePrinterDeleteResponse(const URLFetcher* source, const GURL& url,
+                                   const URLRequestStatus& status,
+                                   int response_code,
+                                   const ResponseCookies& cookies,
+                                   const std::string& data);
+  bool HandleJobMetadataResponse(const URLFetcher* source, const GURL& url,
+                                 const URLRequestStatus& status,
+                                 int response_code,
+                                 const ResponseCookies& cookies,
+                                 const std::string& data);
+  bool HandlePrintTicketResponse(const URLFetcher* source,
+                                 const GURL& url,
+                                 const URLRequestStatus& status,
+                                 int response_code,
+                                 const ResponseCookies& cookies,
+                                 const std::string& data);
+  bool HandlePrintDataResponse(const URLFetcher* source,
+                               const GURL& url,
+                               const URLRequestStatus& status,
+                               int response_code,
+                               const ResponseCookies& cookies,
+                               const std::string& data);
+  bool HandleSuccessStatusUpdateResponse(const URLFetcher* source,
+                                         const GURL& url,
+                                         const URLRequestStatus& status,
+                                         int response_code,
+                                         const ResponseCookies& cookies,
+                                         const std::string& data);
+  bool HandleFailureStatusUpdateResponse(const URLFetcher* source,
+                                         const GURL& url,
+                                         const URLRequestStatus& status,
+                                         int response_code,
+                                         const ResponseCookies& cookies,
+                                         const std::string& data);
+  // End request handlers for each state in the state machine
+
+  // Start the state machine. Based on the flags set this could mean updating
+  // printer information, deleting the printer from the server or looking for
+  // new print jobs
+  void Start();
+
+  // End the state machine. If there are pending tasks, we will post a Start
+  // again.
+  void Stop();
+
+  void StartPrinting();
+  void HandleServerError(const GURL& url);
+  void Reset();
+  void UpdateJobStatus(cloud_print::PrintJobStatus status, PrintJobError error);
+  void MakeServerRequest(const GURL& url, ResponseHandler response_handler);
+  void JobFailed(PrintJobError error);
+  void JobSpooled(cloud_print::PlatformJobId local_job_id);
+  // Returns false if printer info is up to date and no updating is needed.
+  bool UpdatePrinterInfo();
+  bool HavePendingTasks();
+
+  static void DoPrint(const JobDetails& job_details,
+                      const std::string& printer_name,
+                      PrinterJobHandler* job_handler,
+                      MessageLoop* job_message_loop);
+
+
+  scoped_ptr<URLFetcher> request_;
+  cloud_print::PrinterBasicInfo printer_info_;
+  std::string printer_id_;
+  std::string auth_token_;
+  std::string last_caps_hash_;
+  std::string print_data_url_;
+  JobDetails job_details_;
+  Delegate* delegate_;
+  // Once the job has been spooled to the local spooler, this specifies the
+  // job id of the job on the local spooler.
+  cloud_print::PlatformJobId local_job_id_;
+  ResponseHandler next_response_handler_;
+  // The number of consecutive times that connecting to the server failed.
+  int server_error_count_;
+  // The thread on which the actual print operation happens
+  base::Thread print_thread_;
+  // There may be pending tasks in the message queue when Shutdown is called.
+  // We set this flag so as to do nothing in those tasks.
+  bool shutting_down_;
+
+  // Flags that specify various pending server updates
+  bool server_job_available_;
+  bool printer_update_pending_;
+  bool printer_delete_pending_;
+
+  // Some task in the state machine is in progress.
+  bool task_in_progress_;
+  cloud_print::PrinterChangeNotifier printer_change_notifier_;
+  typedef std::list< scoped_refptr<JobStatusUpdater> > JobStatusUpdaterList;
+  JobStatusUpdaterList job_status_updater_list_;
+
+  DISALLOW_COPY_AND_ASSIGN(PrinterJobHandler);
+};
+
+// This typedef is to workaround the issue with certain versions of
+// Visual Studio where it gets confused between multiple Delegate
+// classes and gives a C2500 error. (I saw this error on the try bots -
+// the workaround was not needed for my machine).
+typedef PrinterJobHandler::Delegate PrinterJobHandlerDelegate;
+
+#endif  // CHROME_BROWSER_PRINTING_CLOUD_PRINT_PRINTER_JOB_HANDLER_H_
+
diff --git a/chrome/browser/profile.cc b/chrome/browser/profile.cc
index 8227d23..92b2ff8 100644
--- a/chrome/browser/profile.cc
+++ b/chrome/browser/profile.cc
@@ -43,6 +43,7 @@
 #include "chrome/browser/password_manager/password_store_default.h"
 #include "chrome/browser/password_manager/password_store_linux.h"
 #include "chrome/browser/privacy_blacklist/blacklist.h"
+#include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
 #include "chrome/browser/profile_manager.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/search_engines/template_url_fetcher.h"
@@ -496,6 +497,10 @@ class OffTheRecordProfileImpl : public Profile,
     return NULL;
   }
 
+  virtual CloudPrintProxyService* GetCloudPrintProxyService() {
+    return NULL;
+  }
+
   virtual bool IsSameProfile(Profile* profile) {
     return (profile == this) || (profile == profile_);
   }
@@ -1448,6 +1453,12 @@ ProfileSyncService* ProfileImpl::GetProfileSyncService() {
   return sync_service_.get();
 }
 
+CloudPrintProxyService* ProfileImpl::GetCloudPrintProxyService() {
+  if (!cloud_print_proxy_service_.get())
+    InitCloudPrintProxyService();
+  return cloud_print_proxy_service_.get();
+}
+
 void ProfileImpl::InitSyncService() {
   profile_sync_factory_.reset(
       new ProfileSyncFactoryImpl(this,
@@ -1456,3 +1467,9 @@ void ProfileImpl::InitSyncService() {
       profile_sync_factory_->CreateProfileSyncService());
   sync_service_->Initialize();
 }
+
+void ProfileImpl::InitCloudPrintProxyService() {
+  cloud_print_proxy_service_.reset(new CloudPrintProxyService(this));
+  cloud_print_proxy_service_->Initialize();
+}
+
diff --git a/chrome/browser/profile.h b/chrome/browser/profile.h
index feee692..751d2e2 100644
--- a/chrome/browser/profile.h
+++ b/chrome/browser/profile.h
@@ -75,6 +75,7 @@ class VisitedLinkEventListener;
 class WebDataService;
 class WebKitContext;
 class WebResourceService;
+class CloudPrintProxyService;
 
 typedef intptr_t ProfileId;
 
@@ -351,6 +352,9 @@ class Profile {
   // Returns the ProfileSyncService, creating if not yet created.
   virtual ProfileSyncService* GetProfileSyncService() = 0;
 
+  // Returns the CloudPrintProxyService, creating if not yet created.
+  virtual CloudPrintProxyService* GetCloudPrintProxyService() = 0;
+
   // Return whether 2 profiles are the same. 2 profiles are the same if they
   // represent the same profile. This can happen if there is pointer equality
   // or if one profile is the off the record version of another profile (or vice
@@ -516,6 +520,8 @@ class ProfileImpl : public Profile,
   virtual NTPResourceCache* GetNTPResourceCache();
   virtual ProfileSyncService* GetProfileSyncService();
   void InitSyncService();
+  virtual CloudPrintProxyService* GetCloudPrintProxyService();
+  void InitCloudPrintProxyService();
 
   // NotificationObserver implementation.
   virtual void Observe(NotificationType type,
@@ -571,6 +577,7 @@ class ProfileImpl : public Profile,
 
   scoped_ptr<ProfileSyncFactory> profile_sync_factory_;
   scoped_ptr<ProfileSyncService> sync_service_;
+  scoped_ptr<CloudPrintProxyService> cloud_print_proxy_service_;
 
   scoped_refptr<ChromeURLRequestContextGetter> request_context_;
 
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 55a856a..f759a62 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -1735,6 +1735,22 @@
         'browser/printing/print_view_manager.h',
         'browser/printing/printer_query.cc',
         'browser/printing/printer_query.h',
+        'browser/printing/cloud_print/cloud_print_consts.cc',
+        'browser/printing/cloud_print/cloud_print_consts.h',
+        'browser/printing/cloud_print/cloud_print_helpers.cc',
+        'browser/printing/cloud_print/cloud_print_helpers.h',
+        'browser/printing/cloud_print/cloud_print_proxy_backend.cc',
+        'browser/printing/cloud_print/cloud_print_proxy_backend.h',
+        'browser/printing/cloud_print/cloud_print_proxy_service.cc',
+        'browser/printing/cloud_print/cloud_print_proxy_service.h',
+        'browser/printing/cloud_print/job_status_updater.cc',
+        'browser/printing/cloud_print/job_status_updater.h',
+        'browser/printing/cloud_print/printer_info_linux.cc',
+        'browser/printing/cloud_print/printer_info_mac.cc',
+        'browser/printing/cloud_print/printer_info_win.cc',
+        'browser/printing/cloud_print/printer_info.h',
+        'browser/printing/cloud_print/printer_job_handler.cc',
+        'browser/printing/cloud_print/printer_job_handler.h',
         'browser/privacy_blacklist/blacklist.h',
         'browser/privacy_blacklist/blacklist.cc',
         'browser/privacy_blacklist/blacklist_interceptor.h',
diff --git a/chrome/chrome_dll.gypi b/chrome/chrome_dll.gypi
index ac5845f..79f291f 100644
--- a/chrome/chrome_dll.gypi
+++ b/chrome/chrome_dll.gypi
@@ -35,6 +35,7 @@
                   'urlmon.dll',
                   'imm32.dll',
                   'iphlpapi.dll',
+                  'prntvpt.dll',
                 ],
                 # Set /SUBSYSTEM:WINDOWS for chrome.dll (for consistency).
                 'SubSystem': '2',
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 4f0e23c..2670eec 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -752,4 +752,10 @@ const wchar_t kGeolocationAccessToken[] = L"geolocation.access_token";
 // LoginDatabase.
 const wchar_t kLoginDatabaseMigrated[] = L"login_database.migrated";
 
+// The unique id for this instance of the cloud print proxy.
+const wchar_t kCloudPrintProxyId[] = L"cloud_print.proxy_id";
+// The human-readable name of the Cloud Print proxy. User-supplied.
+const wchar_t kCloudPrintProxyName[] = L"cloud_print.proxy_name";
+// The GAIA auth token (we may need to move it outside of prefs)
+const wchar_t kCloudPrintAuthToken[] = L"cloud_print_auth_token";
 }  // namespace prefs
diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h
index ebb6658..1201f94 100644
--- a/chrome/common/pref_names.h
+++ b/chrome/common/pref_names.h
@@ -277,6 +277,10 @@ extern const wchar_t kGeolocationContentSettings[];
 
 extern const wchar_t kLoginDatabaseMigrated[];
 
+extern const wchar_t kCloudPrintProxyId[];
+extern const wchar_t kCloudPrintProxyName[];
+extern const wchar_t kCloudPrintAuthToken[];
+
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_
diff --git a/chrome/test/testing_profile.h b/chrome/test/testing_profile.h
index 814d8b9..b4e97d5 100644
--- a/chrome/test/testing_profile.h
+++ b/chrome/test/testing_profile.h
@@ -255,6 +255,7 @@ class TestingProfile : public Profile {
 
   // Creates and initializes a profile sync service if the tests require one.
   virtual ProfileSyncService* GetProfileSyncService();
+  virtual CloudPrintProxyService* GetCloudPrintProxyService() { return NULL; }
 
  protected:
   // The path of the profile; the various database and other files are relative