cc: Add gfx::BufferFormat to cc::ResourceProvider::Resource.

cc/resources/transferable_resource.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_RESOURCES_TRANSFERABLE_RESOURCE_H_
 #define CC_RESOURCES_TRANSFERABLE_RESOURCE_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "cc/base/cc_export.h"
 #include "cc/base/resource_id.h"
 #include "cc/resources/resource_format.h"
 #include "gpu/command_buffer/common/mailbox_holder.h"
+#include "ui/gfx/buffer_types.h"
 #include "ui/gfx/color_space.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace cc {
 
 struct ReturnedResource;
 typedef std::vector<ReturnedResource> ReturnedResourceArray;
 struct TransferableResource;
 typedef std::vector<TransferableResource> TransferableResourceArray;
 
 struct CC_EXPORT TransferableResource {
   TransferableResource();
   TransferableResource(const TransferableResource& other);
   ~TransferableResource();
 
   ReturnedResource ToReturnedResource() const;
   static void ReturnResources(const TransferableResourceArray& input,
                               ReturnedResourceArray* output);
 
   ResourceId id;
+  // Refer to ResourceProvider::Resource for the meaning of the following data.
   ResourceFormat format;
+  gfx::BufferFormat buffer_format;
   uint32_t filter;
   gfx::Size size;
   gpu::MailboxHolder mailbox_holder;
   bool read_lock_fences_enabled;
   bool is_software;
 #if defined(OS_ANDROID)
   bool is_backed_by_surface_texture;
   bool wants_promotion_hint;
 #endif
   bool is_overlay_candidate;
   gfx::ColorSpace color_space;
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TRANSFERABLE_RESOURCE_H_