cc: Use correct message loop proxy in BlockingTaskRunner

cc/resources/release_callback_impl.h

+// Copyright 2014 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_RELEASE_CALLBACK_IMPL_H_
+#define CC_RESOURCES_RELEASE_CALLBACK_IMPL_H_
+
+#include "base/callback.h"
+
+namespace cc {
+class BlockingTaskRunner;
+
+typedef base::Callback<void(uint32 sync_point,
+                            bool is_lost,
+                            BlockingTaskRunner* main_thread_task_runner)>
+    ReleaseCallbackImpl;
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_RELEASE_CALLBACK_IMPL_H_