cc: Post the missed BeginFrame to a new stack

cc/test/test_delegating_output_surface.h

 // Copyright 2016 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_TEST_TEST_DELEGATING_OUTPUT_SURFACE_H_
 #define CC_TEST_TEST_DELEGATING_OUTPUT_SURFACE_H_
 
 #include "base/memory/weak_ptr.h"
 #include "cc/output/output_surface.h"
 #include "cc/output/renderer_settings.h"
@@ skipping 34 matching lines @@
 
   // SurfaceFactoryClient implementation.
   void ReturnResources(const ReturnedResourceArray& resources) override;
   void SetBeginFrameSource(BeginFrameSource* begin_frame_source) override;
 
   // DisplayClient implementation.
   void DisplayOutputSurfaceLost() override;
   void DisplaySetMemoryPolicy(const ManagedMemoryPolicy& policy) override;
 
  private:
-  void DrawCallback();
+  void DrawCallback(bool synchronous);
 
   // TODO(danakj): These don't to be stored in unique_ptrs when OutputSurface
   // is owned/destroyed on the compositor thread.
   std::unique_ptr<SurfaceManager> surface_manager_;
   std::unique_ptr<SurfaceIdAllocator> surface_id_allocator_;
   SurfaceId delegated_surface_id_;
 
   // Uses surface_manager_.
   std::unique_ptr<SurfaceFactory> surface_factory_;
 
   // Uses surface_manager_.
   std::unique_ptr<Display> display_;
 
   bool bound_ = false;
 
   base::WeakPtrFactory<TestDelegatingOutputSurface> weak_ptrs_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_TEST_DELEGATING_OUTPUT_SURFACE_H_