RendererCompositorFrameSink should receive BeginFrame messages

content/renderer/render_thread_impl.h

 // Copyright (c) 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 CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 56 matching lines @@
 }
 
 namespace base {
 class SingleThreadTaskRunner;
 class Thread;
 }
 
 namespace cc {
 class BeginFrameSource;
 class CompositorFrameSink;
+class SyntheticBeginFrameSource;
 class TaskGraphRunner;
 }
 
 namespace discardable_memory {
 class ClientDiscardableSharedMemoryManager;
 }
 
 namespace gpu {
 class GpuChannelHost;
 }
@@ skipping 495 matching lines @@
   void RecordPurgeAndSuspendMemoryGrowthMetrics() const;
 
   void ReleaseFreeMemory();
 
   void OnSyncMemoryPressure(
       base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level);
 
   std::unique_ptr<cc::BeginFrameSource> CreateExternalBeginFrameSource(
       int routing_id);
 
+  std::unique_ptr<cc::SyntheticBeginFrameSource>
+  CreateSyntheticBeginFrameSource();
+
   void OnRendererInterfaceRequest(mojom::RendererAssociatedRequest request);
 
   std::unique_ptr<discardable_memory::ClientDiscardableSharedMemoryManager>
       discardable_shared_memory_manager_;
 
   // These objects live solely on the render thread.
   std::unique_ptr<AppCacheDispatcher> appcache_dispatcher_;
   std::unique_ptr<DomStorageDispatcher> dom_storage_dispatcher_;
   std::unique_ptr<IndexedDBDispatcher> main_thread_indexed_db_dispatcher_;
   std::unique_ptr<blink::scheduler::RendererScheduler> renderer_scheduler_;
@@ skipping 187 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_