cc: Remove IOSurface explicit support in VideoLayerImpl.

cc/resources/video_resource_updater.h

 // Copyright 2013 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 CC_RESOURCES_VIDEO_RESOURCE_UPDATER_H_
 #define CC_RESOURCES_VIDEO_RESOURCE_UPDATER_H_
 
 #include <list>
 #include <vector>
 
@@ skipping 19 matching lines @@
 class CC_EXPORT VideoFrameExternalResources {
  public:
   // Specifies what type of data is contained in the mailboxes, as well as how
   // many mailboxes will be present.
   enum ResourceType {
     NONE,
     YUV_RESOURCE,
     RGB_RESOURCE,
     RGBA_RESOURCE,
     STREAM_TEXTURE_RESOURCE,
-    IO_SURFACE,
 
 #if defined(VIDEO_HOLE)
     // TODO(danakj): Implement this with a solid color layer instead of a video
     // frame and video layer.
     HOLE,
 #endif  // defined(VIDEO_HOLE)
 
     // TODO(danakj): Remove this and abstract TextureMailbox into
     // "ExternalResource" that can hold a hardware or software backing.
     SOFTWARE_RESOURCE
@@ skipping 86 matching lines @@
   // Recycle resources so that we can reduce the number of allocations and
   // data transfers.
   ResourceList all_resources_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoResourceUpdater);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_VIDEO_RESOURCE_UPDATER_H_