Media Galleries: Add a dropPermissionForMediaFileSystem() API.

chrome/browser/extensions/api/media_galleries/media_galleries_api.h

 // Copyright (c) 2012 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.
 
 // Defines the Chrome Extensions Media Galleries API functions for accessing
 // user's media files, as specified in the extension API IDL.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERIES_MEDIA_GALLERIES_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERIES_MEDIA_GALLERIES_API_H_
 
@@ skipping 161 matching lines @@
   // Javascript binding for this API will interpret the list appropriately.
   void ReturnGalleriesAndId(
       MediaGalleryPrefId pref_id,
       const std::vector<MediaFileSystemInfo>& filesystems);
 
   // A helper method that calls
   // MediaFileSystemRegistry::GetMediaFileSystemsForExtension().
   void GetMediaFileSystemsForExtension(const MediaFileSystemsCallback& cb);
 };
 
+class MediaGalleriesDropPermissionForMediaFileSystemFunction
+    : public ChromeAsyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("mediaGalleries.dropPermissionForMediaFileSystem",
+                             MEDIAGALLERIES_DROPPERMISSIONFORMEDIAFILESYSTEM)
+
+ protected:
+  virtual ~MediaGalleriesDropPermissionForMediaFileSystemFunction();
+  virtual bool RunImpl() OVERRIDE;
+
+ private:
+  // Bottom half for RunImpl, invoked after the preferences is initialized.
+  void OnPreferencesInit(MediaGalleryPrefId pref_id);
+};
+
 class MediaGalleriesStartMediaScanFunction
     : public ChromeAsyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("mediaGalleries.startMediaScan",
                              MEDIAGALLERIES_STARTMEDIASCAN)
 
  protected:
   virtual ~MediaGalleriesStartMediaScanFunction();
   virtual bool RunImpl() OVERRIDE;
 
@@ skipping 63 matching lines @@
                      scoped_ptr<std::string> blob_header,
                      int64 total_blob_length);
 
   void OnSafeMediaMetadataParserDone(
       bool parse_success, base::DictionaryValue* metadata_dictionary);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERIES_MEDIA_GALLERIES_API_H_