cc: Move TextureMailbox::ReleaseCallback to SingleReleaseCallback.

cc/layers/video_layer_impl.h

 // Copyright 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 CC_LAYERS_VIDEO_LAYER_IMPL_H_
 #define CC_LAYERS_VIDEO_LAYER_IMPL_H_
 
 #include <vector>
 
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer_impl.h"
+#include "cc/resources/release_callback.h"
 #include "cc/resources/video_resource_updater.h"
 
 namespace media {
 class VideoFrame;
 }
 
 namespace cc {
 class VideoFrameProvider;
 class VideoFrameProviderClientImpl;
 
@@ skipping 30 matching lines @@
 
   scoped_refptr<media::VideoFrame> frame_;
 
   scoped_ptr<VideoResourceUpdater> updater_;
   VideoFrameExternalResources::ResourceType frame_resource_type_;
   std::vector<ResourceProvider::ResourceId> frame_resources_;
 
   // TODO(danakj): Remove these, hide software path inside ResourceProvider and
   // ExternalResource (aka TextureMailbox) classes.
   std::vector<unsigned> software_resources_;
-  TextureMailbox::ReleaseCallback software_release_callback_;
+  // Called once for each software resource.
+  ReleaseCallback software_release_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_VIDEO_LAYER_IMPL_H_