Add extension permissions for Media Gallery API.

chrome/common/extensions/permissions/api_permission.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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_PERMISSIONS_API_PERMISSION_H_
 #define CHROME_COMMON_EXTENSIONS_PERMISSIONS_API_PERMISSION_H_
 
 #include <set>
 
 #include "chrome/common/extensions/permissions/permission_message.h"
@@ skipping 42 matching lines @@
     kFileSystemWrite,
     kFontSettings,
     kGeolocation,
     kHistory,
     kIdle,
     kInput,
     kInputMethodPrivate,
     kKeybinding,
     kManagedModePrivate,
     kManagement,
+    kMediaGalleries,
+    kMediaGalleriesAccessEverything,
+    kMediaGalleriesRead,
     kMediaPlayerPrivate,
     kMetricsPrivate,
     kNotification,
     kPageCapture,
     kPlugin,
     kPrivacy,
     kProxy,
     kSocket,
     kStorage,
     kSystemPrivate,
@@ skipping 82 matching lines @@
   int flags_;
   int l10n_message_id_;
   PermissionMessage::ID message_id_;
 };
 
 typedef std::set<APIPermission::ID> APIPermissionSet;
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_PERMISSIONS_API_PERMISSION_H_