Merge Chromium src@r53293

Change-Id: Ia79acf8670f385cee48c45b0a75371d8e950af34

1 files changed, 143 insertions, 0 deletions

diff --git a/chrome/browser/google_update.h b/chrome/browser/google_update.h
new file mode 100644
index 0000000..9bbe58f
--- /dev/null
+++ b/chrome/browser/google_update.h
@@ -0,0 +1,143 @@
+// 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_GOOGLE_UPDATE_H_
+#define CHROME_BROWSER_GOOGLE_UPDATE_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/ref_counted.h"
+#if defined(OS_WIN)
+#include "google_update_idl.h"
+#endif
+
+class MessageLoop;
+namespace views {
+class Window;
+}
+
+// The status of the upgrade. UPGRADE_STARTED and UPGRADE_CHECK_STARTED are
+// internal states and will not be reported as results to the listener.
+enum GoogleUpdateUpgradeResult {
+  // The upgrade has started.
+  UPGRADE_STARTED = 0,
+  // A check for upgrade has been initiated.
+  UPGRADE_CHECK_STARTED,
+  // An update is available.
+  UPGRADE_IS_AVAILABLE,
+  // The upgrade happened successfully.
+  UPGRADE_SUCCESSFUL,
+  // No need to upgrade, we are up to date.
+  UPGRADE_ALREADY_UP_TO_DATE,
+  // An error occurred.
+  UPGRADE_ERROR,
+};
+
+enum GoogleUpdateErrorCode {
+  // The upgrade completed successfully (or hasn't been started yet).
+  GOOGLE_UPDATE_NO_ERROR = 0,
+  // Google Update only supports upgrading if Chrome is installed in the default
+  // location. This error will appear for developer builds and with
+  // installations unzipped to random locations.
+  CANNOT_UPGRADE_CHROME_IN_THIS_DIRECTORY,
+  // Failed to create Google Update JobServer COM class.
+  GOOGLE_UPDATE_JOB_SERVER_CREATION_FAILED,
+  // Failed to create Google Update OnDemand COM class.
+  GOOGLE_UPDATE_ONDEMAND_CLASS_NOT_FOUND,
+  // Google Update OnDemand COM class reported an error during a check for
+  // update (or while upgrading).
+  GOOGLE_UPDATE_ONDEMAND_CLASS_REPORTED_ERROR,
+  // A call to GetResults failed.
+  GOOGLE_UPDATE_GET_RESULT_CALL_FAILED,
+  // A call to GetVersionInfo failed.
+  GOOGLE_UPDATE_GET_VERSION_INFO_FAILED,
+  // An error occurred while upgrading (or while checking for update).
+  // Check the Google Update log in %TEMP% for more details.
+  GOOGLE_UPDATE_ERROR_UPDATING,
+};
+
+// The GoogleUpdateStatusListener interface is used by components to receive
+// notifications about the results of an Google Update operation.
+class GoogleUpdateStatusListener {
+ public:
+  // This function is called when Google Update has finished its operation and
+  // wants to notify us about the results. |results| represents what the end
+  // state is, |error_code| represents what error occurred and |version|
+  // specifies what new version Google Update detected (or installed). This
+  // value can be a blank string, if the version tag in the Update{} block
+  // (in Google Update's server config for Chrome) is blank.
+  virtual void OnReportResults(GoogleUpdateUpgradeResult results,
+                               GoogleUpdateErrorCode error_code,
+                               const std::wstring& version) = 0;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// The Google Update class is responsible for communicating with Google Update
+// and get it to perform operations on our behalf (for example, CheckForUpdate).
+// This class will report back to its parent via the GoogleUpdateStatusListener
+// interface and will delete itself after reporting back.
+//
+////////////////////////////////////////////////////////////////////////////////
+class GoogleUpdate : public base::RefCountedThreadSafe<GoogleUpdate> {
+ public:
+  GoogleUpdate();
+
+  // Ask Google Update to see if a new version is available. If the parameter
+  // |install_if_newer| is true then Google Update will also install that new
+  // version.
+  // |window| should point to a foreground window. This is needed to ensure
+  // that Vista/Windows 7 UAC prompts show up in the foreground. It may also
+  // be null.
+  void CheckForUpdate(bool install_if_newer, views::Window* window);
+
+  // Pass NULL to clear the listener
+  void set_status_listener(GoogleUpdateStatusListener* listener) {
+    listener_ = listener;
+  }
+
+ private:
+  friend class base::RefCountedThreadSafe<GoogleUpdate>;
+
+  virtual ~GoogleUpdate();
+
+// The chromeos implementation is in browser/chromeos/google_update.cpp
+
+#if defined(OS_WIN)
+
+  // This function reports failure from the Google Update operation to the
+  // listener.
+  // Note, after this function completes, this object will have deleted itself.
+  bool ReportFailure(HRESULT hr, GoogleUpdateErrorCode error_code,
+                     MessageLoop* main_loop);
+
+#endif
+
+  // We need to run the update check on another thread than the main thread, and
+  // therefore CheckForUpdate will delegate to this function. |main_loop| points
+  // to the message loop that we want the response to come from.
+  // |window| should point to a foreground window. This is needed to ensure that
+  // Vista/Windows 7 UAC prompts show up in the foreground. It may also be null.
+  bool InitiateGoogleUpdateCheck(bool install_if_newer, views::Window* window,
+                                 MessageLoop* main_loop);
+
+  // This function reports the results of the GoogleUpdate operation to the
+  // listener. If results indicates an error, the error_code will indicate which
+  // error occurred.
+  // Note, after this function completes, this object will have deleted itself.
+  void ReportResults(GoogleUpdateUpgradeResult results,
+                     GoogleUpdateErrorCode error_code);
+
+  // Which version string Google Update found (if a new one was available).
+  // Otherwise, this will be blank.
+  std::wstring version_available_;
+
+  // The listener who is interested in finding out the result of the operation.
+  GoogleUpdateStatusListener* listener_;
+
+  DISALLOW_COPY_AND_ASSIGN(GoogleUpdate);
+};
+
+#endif  // CHROME_BROWSER_GOOGLE_UPDATE_H_