Remove uses of external begin frame sources

content/test/fake_compositor_dependencies.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 CONTENT_TEST_FAKE_COMPOSITOR_DEPENDENCIES_H_
 #define CONTENT_TEST_FAKE_COMPOSITOR_DEPENDENCIES_H_
 
 #include "base/macros.h"
 #include "cc/output/buffer_to_texture_target_map.h"
 #include "cc/test/test_gpu_memory_buffer_manager.h"
@@ skipping 21 matching lines @@
   bool IsGpuMemoryBufferCompositorResourcesEnabled() override;
   bool IsElasticOverscrollEnabled() override;
   const cc::BufferToTextureTargetMap& GetBufferToTextureTargetMap() override;
   scoped_refptr<base::SingleThreadTaskRunner>
   GetCompositorMainThreadTaskRunner() override;
   scoped_refptr<base::SingleThreadTaskRunner>
   GetCompositorImplThreadTaskRunner() override;
   cc::SharedBitmapManager* GetSharedBitmapManager() override;
   gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
   blink::scheduler::RendererScheduler* GetRendererScheduler() override;
-  std::unique_ptr<cc::BeginFrameSource> CreateExternalBeginFrameSource(
-      int routing_id) override;
   cc::ImageSerializationProcessor* GetImageSerializationProcessor() override;
   cc::TaskGraphRunner* GetTaskGraphRunner() override;
   bool AreImageDecodeTasksEnabled() override;
   bool IsThreadedAnimationEnabled() override;
 
  private:
   cc::TestSharedBitmapManager shared_bitmap_manager_;
   cc::TestGpuMemoryBufferManager gpu_memory_buffer_manager_;
   cc::TestTaskGraphRunner task_graph_runner_;
   blink::scheduler::FakeRendererScheduler renderer_scheduler_;
   cc::BufferToTextureTargetMap buffer_to_texture_target_map_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeCompositorDependencies);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_FAKE_COMPOSITOR_DEPENDENCIES_H_