Support sync file io for pepper, to support LSOs

BUG=chromium-os:7492
TEST=run pepper flash (with LSO support) on http://www.bestflashanimationsite.com/tutorials/4/ , check that it properly stores the objects.

Review URL: http://codereview.chromium.org/3800010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@63003 0039d316-1c4b-4281-b951-d872f2087c98

10 files changed, 576 insertions, 0 deletions

diff --git a/chrome/browser/renderer_host/browser_render_process_host.cc b/chrome/browser/renderer_host/browser_render_process_host.cc
index f8ef0b1..5e254e5 100644
--- a/chrome/browser/renderer_host/browser_render_process_host.cc
+++ b/chrome/browser/renderer_host/browser_render_process_host.cc
@@ -20,6 +20,7 @@
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
+#include "base/path_service.h"
 #include "base/platform_file.h"
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
@@ -38,6 +39,7 @@
 #include "chrome/browser/plugin_service.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/renderer_host/audio_renderer_host.h"
+#include "chrome/browser/renderer_host/pepper_file_message_filter.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/renderer_host/render_view_host_delegate.h"
 #include "chrome/browser/renderer_host/render_widget_helper.h"
@@ -46,6 +48,7 @@
 #include "chrome/browser/renderer_host/web_cache_manager.h"
 #include "chrome/browser/spellcheck_host.h"
 #include "chrome/browser/visitedlink_master.h"
+#include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/child_process_info.h"
 #include "chrome/common/extensions/extension.h"
@@ -331,6 +334,10 @@ bool BrowserRenderProcessHost::Init(
   // be doing.
   channel_->set_sync_messages_with_no_timeout_allowed(false);
 
+  scoped_refptr<PepperFileMessageFilter> pepper_file_message_filter =
+      new PepperFileMessageFilter(id(), profile());
+  channel_->AddFilter(pepper_file_message_filter);
+
   if (run_renderer_in_process()) {
     // Crank up a thread and run the initialization there.  With the way that
     // messages flow between the browser and renderer, this thread is required
diff --git a/chrome/browser/renderer_host/pepper_file_message_filter.cc b/chrome/browser/renderer_host/pepper_file_message_filter.cc
new file mode 100644
index 0000000..e7b331b
--- /dev/null
+++ b/chrome/browser/renderer_host/pepper_file_message_filter.cc
@@ -0,0 +1,271 @@
+// 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/renderer_host/pepper_file_message_filter.h"
+
+#include "base/callback.h"
+#include "base/file_util.h"
+#include "base/file_path.h"
+#include "base/process_util.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/browser_thread.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/renderer_host/browser_render_process_host.h"
+#include "chrome/common/child_process_host.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/common/render_messages.h"
+#include "ipc/ipc_platform_file.h"
+
+#if defined(OS_POSIX)
+#include "base/file_descriptor_posix.h"
+#endif
+
+PepperFileMessageFilter::PepperFileMessageFilter(
+    int child_id, Profile* profile)
+    : handle_(base::kNullProcessHandle),
+      channel_(NULL) {
+  pepper_path_ = profile->GetPath().Append(FILE_PATH_LITERAL("Pepper Data"));
+}
+
+PepperFileMessageFilter::~PepperFileMessageFilter() {
+  // This function should be called on the IO thread.
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  if (handle_)
+    base::CloseProcessHandle(handle_);
+}
+
+// Called on the IPC thread:
+void PepperFileMessageFilter::OnFilterAdded(IPC::Channel* channel) {
+  channel_ = channel;
+}
+
+// Called on the IPC thread:
+void PepperFileMessageFilter::OnChannelConnected(int32 peer_pid) {
+  DCHECK(!handle_) << " " << handle_;
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  if (!base::OpenProcessHandle(peer_pid, &handle_)) {
+    NOTREACHED();
+  }
+}
+
+void PepperFileMessageFilter::OnChannelError() {
+}
+
+// Called on the IPC thread:
+void PepperFileMessageFilter::OnChannelClosing() {
+  channel_ = NULL;
+}
+
+// Called on the IPC thread:
+bool PepperFileMessageFilter::OnMessageReceived(const IPC::Message& msg) {
+  switch (msg.type()) {
+    case ViewHostMsg_PepperOpenFile::ID:
+    case ViewHostMsg_PepperRenameFile::ID:
+    case ViewHostMsg_PepperDeleteFileOrDir::ID:
+    case ViewHostMsg_PepperCreateDir::ID:
+    case ViewHostMsg_PepperQueryFile::ID:
+    case ViewHostMsg_PepperGetDirContents::ID:
+      break;
+    default:
+      return false;
+  }
+  BrowserThread::PostTask(
+      BrowserThread::FILE, FROM_HERE,
+      NewRunnableMethod(
+          this, &PepperFileMessageFilter::OnMessageReceivedFileThread, msg));
+
+  return true;
+}
+
+void PepperFileMessageFilter::OnMessageReceivedFileThread(
+    const IPC::Message& msg) {
+  bool msg_is_ok = true;
+  IPC_BEGIN_MESSAGE_MAP_EX(PepperFileMessageFilter, msg, msg_is_ok)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_PepperOpenFile, OnPepperOpenFile)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_PepperRenameFile, OnPepperRenameFile)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_PepperDeleteFileOrDir,
+                        OnPepperDeleteFileOrDir)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_PepperCreateDir, OnPepperCreateDir)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_PepperQueryFile, OnPepperQueryFile)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_PepperGetDirContents,
+                        OnPepperGetDirContents)
+    IPC_MESSAGE_UNHANDLED_ERROR()
+  IPC_END_MESSAGE_MAP_EX()
+
+  if (!msg_is_ok) {
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        NewRunnableFunction(
+            &BrowserRenderProcessHost::BadMessageTerminateProcess,
+            msg.type(), handle_));
+  }
+}
+
+void PepperFileMessageFilter::OnDestruct() {
+  BrowserThread::DeleteOnIOThread::Destruct(this);
+}
+
+// Called on the FILE thread:
+void PepperFileMessageFilter::Send(IPC::Message* message) {
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      NewRunnableMethod(
+        this, &PepperFileMessageFilter::SendFromIOThread, message));
+}
+
+// Called on the IPC thread:
+bool PepperFileMessageFilter::SendFromIOThread(IPC::Message* message) {
+  if (!channel_) {
+    delete message;
+    return false;
+  }
+
+  return channel_->Send(message);
+}
+
+// Called on the FILE thread:
+void PepperFileMessageFilter::OnPepperOpenFile(
+    const FilePath& path,
+    int flags,
+    base::PlatformFileError* error,
+    IPC::PlatformFileForTransit* file) {
+  FilePath full_path = MakePepperPath(path);
+  if (full_path.empty()) {
+    *error = base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+    *file = IPC::InvalidPlatformFileForTransit();
+    return;
+  }
+
+  base::PlatformFile file_handle = base::CreatePlatformFile(
+      full_path, flags, NULL, error);
+
+  if (*error != base::PLATFORM_FILE_OK) {
+    *file = IPC::InvalidPlatformFileForTransit();
+    return;
+  }
+
+  // Make sure we didn't try to open a directory: directory fd shouldn't pass
+  // to untrusted processes because they open security holes.
+  base::PlatformFileInfo info;
+  if (!base::GetPlatformFileInfo(file_handle, &info) || info.is_directory) {
+    // When in doubt, throw it out.
+    *error = base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+    *file = IPC::InvalidPlatformFileForTransit();
+    return;
+  }
+
+#if defined(OS_WIN)
+  // Duplicate the file handle so that the renderer process can access the file.
+  if (!DuplicateHandle(GetCurrentProcess(), file_handle,
+                       handle_, file, 0, false,
+                       DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {
+    // file_handle is closed whether or not DuplicateHandle succeeds.
+    *error = base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+    *file = INVALID_HANDLE_VALUE;
+  }
+#else
+  *file = base::FileDescriptor(file_handle, true);
+#endif
+}
+
+void PepperFileMessageFilter::OnPepperRenameFile(
+    const FilePath& path_from,
+    const FilePath& path_to,
+    base::PlatformFileError* error) {
+  FilePath full_path_from = MakePepperPath(path_from);
+  FilePath full_path_to = MakePepperPath(path_to);
+  if (full_path_from.empty() || full_path_to.empty()) {
+    *error = base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+    return;
+  }
+
+  bool result = file_util::Move(full_path_from, full_path_to);
+  *error = result ? base::PLATFORM_FILE_OK
+                  : base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+}
+
+void PepperFileMessageFilter::OnPepperDeleteFileOrDir(
+    const FilePath& path,
+    bool recursive,
+    base::PlatformFileError* error) {
+  FilePath full_path = MakePepperPath(path);
+  if (full_path.empty()) {
+    *error = base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+    return;
+  }
+
+  bool result = file_util::Delete(full_path, recursive);
+  *error = result ? base::PLATFORM_FILE_OK
+                  : base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+}
+
+void PepperFileMessageFilter::OnPepperCreateDir(
+    const FilePath& path,
+    base::PlatformFileError* error) {
+  FilePath full_path = MakePepperPath(path);
+  if (full_path.empty()) {
+    *error = base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+    return;
+  }
+
+  bool result = file_util::CreateDirectory(full_path);
+  *error = result ? base::PLATFORM_FILE_OK
+                  : base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+}
+
+void PepperFileMessageFilter::OnPepperQueryFile(
+    const FilePath& path,
+    base::PlatformFileInfo* info,
+    base::PlatformFileError* error) {
+  FilePath full_path = MakePepperPath(path);
+  if (full_path.empty()) {
+    *error = base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+    return;
+  }
+
+  bool result = file_util::GetFileInfo(full_path, info);
+  *error = result ? base::PLATFORM_FILE_OK
+                  : base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+}
+
+void PepperFileMessageFilter::OnPepperGetDirContents(
+    const FilePath& path,
+    PepperDirContents* contents,
+    base::PlatformFileError* error) {
+  FilePath full_path = MakePepperPath(path);
+  if (full_path.empty()) {
+    *error = base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+    return;
+  }
+
+  contents->clear();
+
+  file_util::FileEnumerator enumerator(
+      full_path, false,
+      static_cast<file_util::FileEnumerator::FILE_TYPE>(
+          file_util::FileEnumerator::FILES |
+          file_util::FileEnumerator::DIRECTORIES |
+          file_util::FileEnumerator::INCLUDE_DOT_DOT));
+
+  while (!enumerator.Next().empty()) {
+    file_util::FileEnumerator::FindInfo info;
+    enumerator.GetFindInfo(&info);
+    PepperDirEntry entry = {
+      file_util::FileEnumerator::GetFilename(info),
+      file_util::FileEnumerator::IsDirectory(info)
+    };
+    contents->push_back(entry);
+  }
+
+  *error = base::PLATFORM_FILE_OK;
+}
+
+FilePath PepperFileMessageFilter::MakePepperPath(const FilePath& base_path) {
+  if (base_path.IsAbsolute() || base_path.ReferencesParent()) {
+    return FilePath();
+  }
+  return pepper_path_.Append(base_path);
+}
diff --git a/chrome/browser/renderer_host/pepper_file_message_filter.h b/chrome/browser/renderer_host/pepper_file_message_filter.h
new file mode 100644
index 0000000..37e57f6
--- /dev/null
+++ b/chrome/browser/renderer_host/pepper_file_message_filter.h
@@ -0,0 +1,87 @@
+// 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_RENDERER_HOST_PEPPER_FILE_MESSAGE_FILTER_H_
+#define CHROME_BROWSER_RENDERER_HOST_PEPPER_FILE_MESSAGE_FILTER_H_
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include "base/file_path.h"
+#include "base/process.h"
+#include "base/ref_counted.h"
+#include "base/task.h"
+#include "build/build_config.h"
+#include "chrome/browser/renderer_host/resource_dispatcher_host.h"
+#include "ipc/ipc_channel_proxy.h"
+#include "ipc/ipc_platform_file.h"
+#include "webkit/glue/plugins/pepper_dir_contents.h"
+
+class Profile;
+
+// A message filter for Pepper-specific File I/O messages.
+//
+// NOTE: Contrary to most message filters, this one handles the messages (On*
+// functions) on the FILE thread instead of the IO thread: OnMessageReceived
+// forwards the mesage to the FILE thread, where it's handled by
+// OnMessageReceivedFileThread.
+class PepperFileMessageFilter : public IPC::ChannelProxy::MessageFilter {
+ public:
+  PepperFileMessageFilter(int child_id, Profile* profile);
+
+  // IPC::ChannelProxy::MessageFilter methods:
+  virtual void OnFilterAdded(IPC::Channel* channel);
+  virtual void OnChannelConnected(int32 peer_pid);
+  virtual void OnChannelError();
+  virtual void OnChannelClosing();
+  virtual bool OnMessageReceived(const IPC::Message& message);
+  virtual void OnDestruct();
+
+  // Called from the FILE thread.
+  void Send(IPC::Message* message);
+
+ private:
+  friend class BrowserThread;
+  friend class DeleteTask<PepperFileMessageFilter>;
+  virtual ~PepperFileMessageFilter();
+  void OnMessageReceivedFileThread(const IPC::Message& message);
+  bool SendFromIOThread(IPC::Message* message);
+
+  // Called on the FILE thread:
+  void OnPepperOpenFile(const FilePath& path,
+                        int flags,
+                        base::PlatformFileError* error,
+                        IPC::PlatformFileForTransit* file);
+  void OnPepperRenameFile(const FilePath& path_from,
+                          const FilePath& path_to,
+                          base::PlatformFileError* error);
+  void OnPepperDeleteFileOrDir(const FilePath& path,
+                               bool recursive,
+                               base::PlatformFileError* error);
+  void OnPepperCreateDir(const FilePath& path,
+                         base::PlatformFileError* error);
+  void OnPepperQueryFile(const FilePath& path,
+                         base::PlatformFileInfo* info,
+                         base::PlatformFileError* error);
+  void OnPepperGetDirContents(const FilePath& path,
+                              PepperDirContents* contents,
+                              base::PlatformFileError* error);
+
+  FilePath MakePepperPath(const FilePath& base_path);
+
+  // The process handle for the peer.
+  base::ProcessHandle handle_;
+
+  // The channel associated with the renderer connection. This pointer is not
+  // owned by this class.
+  IPC::Channel* channel_;
+
+  // The base path for the pepper data.
+  FilePath pepper_path_;
+
+  DISALLOW_COPY_AND_ASSIGN(PepperFileMessageFilter);
+};
+
+#endif  // CHROME_BROWSER_RENDERER_HOST_PEPPER_FILE_MESSAGE_FILTER_H_
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index d5a3f8e..fe756da 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -2485,6 +2485,8 @@
         'browser/renderer_host/gtk_key_bindings_handler.h',
         'browser/renderer_host/offline_resource_handler.cc',
         'browser/renderer_host/offline_resource_handler.h',
+        'browser/renderer_host/pepper_file_message_filter.cc',
+        'browser/renderer_host/pepper_file_message_filter.h',
         'browser/renderer_host/redirect_to_file_resource_handler.cc',
         'browser/renderer_host/redirect_to_file_resource_handler.h',
         'browser/renderer_host/render_process_host.cc',
diff --git a/chrome/common/pepper_plugin_registry.cc b/chrome/common/pepper_plugin_registry.cc
index 87a2bd3..92fae2e 100644
--- a/chrome/common/pepper_plugin_registry.cc
+++ b/chrome/common/pepper_plugin_registry.cc
@@ -193,6 +193,7 @@ PepperPluginRegistry::PepperPluginRegistry() {
       DLOG(ERROR) << "Failed to load pepper module: " << path.value();
       continue;
     }
+    module->set_name(it->name);
     modules_[path] = module;
   }
 
@@ -208,6 +209,7 @@ PepperPluginRegistry::PepperPluginRegistry() {
       DLOG(ERROR) << "Failed to load pepper module: " << path.value();
       continue;
     }
+    module->set_name(plugins[i].name);
     modules_[path] = module;
   }
 }
diff --git a/chrome/common/render_messages.cc b/chrome/common/render_messages.cc
index 5d422da..b6e6d66 100644
--- a/chrome/common/render_messages.cc
+++ b/chrome/common/render_messages.cc
@@ -1109,4 +1109,24 @@ void ParamTraits<AudioBuffersState>::Log(const param_type& p, std::string* l) {
   l->append(")");
 }
 
+void ParamTraits<PepperDirEntry>::Write(Message* m, const param_type& p) {
+  WriteParam(m, p.name);
+  WriteParam(m, p.is_dir);
+}
+
+bool ParamTraits<PepperDirEntry>::Read(const Message* m,
+                                    void** iter,
+                                    param_type* p) {
+  return ReadParam(m, iter, &p->name) &&
+      ReadParam(m, iter, &p->is_dir);
+}
+
+void ParamTraits<PepperDirEntry>::Log(const param_type& p, std::string* l) {
+  l->append("(");
+  LogParam(p.name, l);
+  l->append(", ");
+  LogParam(p.is_dir, l);
+  l->append(")");
+}
+
 }  // namespace IPC
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index 29d50e0..ce893d2 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -29,6 +29,7 @@
 #include "third_party/WebKit/WebKit/chromium/public/WebStorageArea.h"
 #include "webkit/appcache/appcache_interfaces.h"  // enum appcache::Status
 #include "webkit/fileapi/file_system_types.h"  // enum fileapi::FileSystemType
+#include "webkit/glue/plugins/pepper_dir_contents.h"
 
 #if defined(OS_MACOSX)
 struct FontDescriptor;
@@ -606,6 +607,14 @@ struct ParamTraits<AudioBuffersState> {
   static void Log(const param_type& p, std::string* l);
 };
 
+template <>
+struct ParamTraits<PepperDirEntry> {
+  typedef PepperDirEntry param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, void** iter, param_type* p);
+  static void Log(const param_type& p, std::string* l);
+};
+
 }  // namespace IPC
 
 #define MESSAGES_INTERNAL_FILE "chrome/common/render_messages_internal.h"
diff --git a/chrome/common/render_messages_internal.h b/chrome/common/render_messages_internal.h
index 1cfa70b3..75eacdf 100644
--- a/chrome/common/render_messages_internal.h
+++ b/chrome/common/render_messages_internal.h
@@ -2986,4 +2986,42 @@ IPC_BEGIN_MESSAGES(ViewHost)
   IPC_MESSAGE_ROUTED1(ViewHostMsg_UpdateContentRestrictions,
                       int /* restrictions */)
 
+  // Trusted Pepper Filesystem messages ----------------------------------------
+
+  // Open the file.
+  IPC_SYNC_MESSAGE_CONTROL2_2(ViewHostMsg_PepperOpenFile,
+                              FilePath /* path */,
+                              int /* flags */,
+                              base::PlatformFileError /* error_code */,
+                              IPC::PlatformFileForTransit /* result */)
+
+  // Rename the file.
+  IPC_SYNC_MESSAGE_CONTROL2_1(ViewHostMsg_PepperRenameFile,
+                              FilePath /* path_from */,
+                              FilePath /* path_to */,
+                              base::PlatformFileError /* error_code */)
+
+  // Delete the file.
+  IPC_SYNC_MESSAGE_CONTROL2_1(ViewHostMsg_PepperDeleteFileOrDir,
+                              FilePath /* path */,
+                              bool /* recursive */,
+                              base::PlatformFileError /* error_code */)
+
+  // Create the directory.
+  IPC_SYNC_MESSAGE_CONTROL1_1(ViewHostMsg_PepperCreateDir,
+                              FilePath /* path */,
+                              base::PlatformFileError /* error_code */)
+
+  // Query the file's info.
+  IPC_SYNC_MESSAGE_CONTROL1_2(ViewHostMsg_PepperQueryFile,
+                              FilePath /* path */,
+                              base::PlatformFileInfo, /* info */
+                              base::PlatformFileError /* error_code */)
+
+  // Get the directory's contents.
+  IPC_SYNC_MESSAGE_CONTROL1_2(ViewHostMsg_PepperGetDirContents,
+                              FilePath /* path */,
+                              PepperDirContents, /* contents */
+                              base::PlatformFileError /* error_code */)
+
 IPC_END_MESSAGES(ViewHost)
diff --git a/chrome/renderer/pepper_plugin_delegate_impl.cc b/chrome/renderer/pepper_plugin_delegate_impl.cc
index a3e18fe..ed0dccd 100644
--- a/chrome/renderer/pepper_plugin_delegate_impl.cc
+++ b/chrome/renderer/pepper_plugin_delegate_impl.cc
@@ -14,6 +14,7 @@
 #include "base/string_split.h"
 #include "base/task.h"
 #include "base/time.h"
+#include "base/utf_string_conversions.h"
 #include "chrome/common/child_thread.h"
 #include "chrome/common/file_system/file_system_dispatcher.h"
 #include "chrome/common/render_messages.h"
@@ -725,6 +726,121 @@ bool PepperPluginDelegateImpl::Rename(
   return file_system_dispatcher->Move(file_path, new_file_path, dispatcher);
 }
 
+FilePath GetModuleLocalFilePath(const std::string& module_name,
+                                const FilePath& path) {
+#if defined(OS_WIN)
+  FilePath full_path(UTF8ToUTF16(module_name));
+#else
+  FilePath full_path(module_name);
+#endif
+  full_path = full_path.Append(path);
+  return full_path;
+}
+
+base::PlatformFileError PepperPluginDelegateImpl::OpenModuleLocalFile(
+    const std::string& module_name,
+    const FilePath& path,
+    int flags,
+    base::PlatformFile* file) {
+  FilePath full_path = GetModuleLocalFilePath(module_name, path);
+  if (full_path.empty()) {
+    *file = base::kInvalidPlatformFileValue;
+    return base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+  }
+  IPC::PlatformFileForTransit transit_file;
+  base::PlatformFileError error;
+  IPC::Message* msg = new ViewHostMsg_PepperOpenFile(
+      full_path, flags, &error, &transit_file);
+  if (!render_view_->Send(msg)) {
+    *file = base::kInvalidPlatformFileValue;
+    return base::PLATFORM_FILE_ERROR_FAILED;
+  }
+  *file = IPC::PlatformFileForTransitToPlatformFile(transit_file);
+  return error;
+}
+
+base::PlatformFileError PepperPluginDelegateImpl::RenameModuleLocalFile(
+    const std::string& module_name,
+    const FilePath& path_from,
+    const FilePath& path_to) {
+  FilePath full_path_from = GetModuleLocalFilePath(module_name, path_from);
+  FilePath full_path_to = GetModuleLocalFilePath(module_name, path_to);
+  if (full_path_from.empty() || full_path_to.empty()) {
+    return base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+  }
+  base::PlatformFileError error;
+  IPC::Message* msg = new ViewHostMsg_PepperRenameFile(
+      full_path_from, full_path_to, &error);
+  if (!render_view_->Send(msg)) {
+    return base::PLATFORM_FILE_ERROR_FAILED;
+  }
+  return error;
+}
+
+base::PlatformFileError PepperPluginDelegateImpl::DeleteModuleLocalFileOrDir(
+    const std::string& module_name,
+    const FilePath& path,
+    bool recursive) {
+  FilePath full_path = GetModuleLocalFilePath(module_name, path);
+  if (full_path.empty()) {
+    return base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+  }
+  base::PlatformFileError error;
+  IPC::Message* msg = new ViewHostMsg_PepperDeleteFileOrDir(
+      full_path, recursive, &error);
+  if (!render_view_->Send(msg)) {
+    return base::PLATFORM_FILE_ERROR_FAILED;
+  }
+  return error;
+}
+
+base::PlatformFileError PepperPluginDelegateImpl::CreateModuleLocalDir(
+    const std::string& module_name,
+    const FilePath& path) {
+  FilePath full_path = GetModuleLocalFilePath(module_name, path);
+  if (full_path.empty()) {
+    return base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+  }
+  base::PlatformFileError error;
+  IPC::Message* msg = new ViewHostMsg_PepperCreateDir(full_path, &error);
+  if (!render_view_->Send(msg)) {
+    return base::PLATFORM_FILE_ERROR_FAILED;
+  }
+  return error;
+}
+
+base::PlatformFileError PepperPluginDelegateImpl::QueryModuleLocalFile(
+    const std::string& module_name,
+    const FilePath& path,
+    base::PlatformFileInfo* info) {
+  FilePath full_path = GetModuleLocalFilePath(module_name, path);
+  if (full_path.empty()) {
+    return base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+  }
+  base::PlatformFileError error;
+  IPC::Message* msg = new ViewHostMsg_PepperQueryFile(full_path, info, &error);
+  if (!render_view_->Send(msg)) {
+    return base::PLATFORM_FILE_ERROR_FAILED;
+  }
+  return error;
+}
+base::PlatformFileError PepperPluginDelegateImpl::GetModuleLocalDirContents(
+      const std::string& module_name,
+      const FilePath& path,
+      PepperDirContents* contents) {
+  FilePath full_path = GetModuleLocalFilePath(module_name, path);
+  if (full_path.empty()) {
+    return base::PLATFORM_FILE_ERROR_ACCESS_DENIED;
+  }
+  base::PlatformFileError error;
+  IPC::Message* msg =
+      new ViewHostMsg_PepperGetDirContents(full_path, contents, &error);
+  if (!render_view_->Send(msg)) {
+    return base::PLATFORM_FILE_ERROR_FAILED;
+  }
+  return error;
+}
+
 scoped_refptr<base::MessageLoopProxy>
 PepperPluginDelegateImpl::GetFileThreadMessageLoopProxy() {
   return RenderThread::current()->GetFileThreadMessageLoopProxy();
diff --git a/chrome/renderer/pepper_plugin_delegate_impl.h b/chrome/renderer/pepper_plugin_delegate_impl.h
index 790be75..fdaf1e9 100644
--- a/chrome/renderer/pepper_plugin_delegate_impl.h
+++ b/chrome/renderer/pepper_plugin_delegate_impl.h
@@ -99,6 +99,30 @@ class PepperPluginDelegateImpl
   virtual bool Rename(const FilePath& file_path,
                       const FilePath& new_file_path,
                       fileapi::FileSystemCallbackDispatcher* dispatcher);
+  virtual base::PlatformFileError OpenModuleLocalFile(
+      const std::string& module_name,
+      const FilePath& path,
+      int flags,
+      base::PlatformFile* file);
+  virtual base::PlatformFileError RenameModuleLocalFile(
+      const std::string& module_name,
+      const FilePath& path_from,
+      const FilePath& path_to);
+  virtual base::PlatformFileError DeleteModuleLocalFileOrDir(
+      const std::string& module_name,
+      const FilePath& path,
+      bool recursive);
+  virtual base::PlatformFileError CreateModuleLocalDir(
+      const std::string& module_name,
+      const FilePath& path);
+  virtual base::PlatformFileError QueryModuleLocalFile(
+      const std::string& module_name,
+      const FilePath& path,
+      base::PlatformFileInfo* info);
+  virtual base::PlatformFileError GetModuleLocalDirContents(
+      const std::string& module_name,
+      const FilePath& path,
+      PepperDirContents* contents);
   virtual scoped_refptr<base::MessageLoopProxy> GetFileThreadMessageLoopProxy();
   virtual pepper::FullscreenContainer* CreateFullscreenContainer(
       pepper::PluginInstance* instance);