cc: Make separate interface for BeginFrame ipc from OutputSurface

content/renderer/gpu/compositor_ipc_message_filter.h

Index: content/renderer/gpu/compositor_ipc_message_filter.h
diff --git a/content/renderer/gpu/compositor_ipc_message_filter.h b/content/renderer/gpu/compositor_ipc_message_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..ecbc0f6989df8a6a1bfe781699a9adf04ac5667f
--- /dev/null
+++ b/content/renderer/gpu/compositor_ipc_message_filter.h
@@ -0,0 +1,25 @@
+// 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 CONTENT_RENDERER_GPU_COMPOSITOR_IPC_MESSAGE_FILTER_
+#define CONTENT_RENDERER_GPU_COMPOSITOR_IPC_MESSAGE_FILTER_
+
+namespace base {
+class TaskRunner;
+}
+
+namespace IPC {
+class ForwardingMessageFilter;
+}
+
+namespace content {
+
+// Create all ipc message filters used by compositor.
+// TODO(simonhong): Unify all filters used by compositor into this one.
+IPC::ForwardingMessageFilter* CreateCompositorIPCMessageFilter(
+    base::TaskRunner* target_task_runner);
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_GPU_COMPOSITOR_IPC_MESSAGE_FILTER_