[Extensions] Convert APIs to use movable types [7]

chrome/common/extensions/api/media_galleries.idl

 // 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.
 
 // Use the <code>chrome.mediaGalleries</code> API to access media files (audio,
 // images, video) from the user's local disks (with the user's consent).
-namespace mediaGalleries {
+[use_movable_types=true] namespace mediaGalleries {
 
   [inline_doc] enum GalleryChangeType {
     // The contents of the gallery have changed.
     contents_changed,
     // The watch has been dropped because the device has been detached,
     // the gallery permission has been removed, or any other reason.
     watch_dropped
   };
 
   [inline_doc] enum GetMediaFileSystemsInteractivity {
@@ skipping 227 matching lines @@
   interface Events {
     // Fired when a media gallery is changed or a gallery watch is dropped.
     static void onGalleryChanged(GalleryChangeDetails details);
 
     // The pending media scan has changed state. See details for more
     // information.
     [nodefine, deprecated="The mediaGalleries API no longer supports scanning."]
     static void onScanProgress(ScanProgressDetails details);
   };
 };