sync compositor: Remove begin frame source

content/renderer/android/synchronous_compositor_external_begin_frame_source.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_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_EXTERNAL_BEGIN_FRAME_SOURCE_H_
-#define CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_EXTERNAL_BEGIN_FRAME_SOURCE_H_
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "base/threading/thread_checker.h"
-#include "cc/scheduler/begin_frame_source.h"
-
-namespace content {
-
-class SynchronousCompositorRegistry;
-
-class SynchronousCompositorExternalBeginFrameSourceClient {
- public:
-  virtual void OnNeedsBeginFramesChange(bool needs_begin_frames) = 0;
-
- protected:
-  virtual ~SynchronousCompositorExternalBeginFrameSourceClient() {}
-};
-
-// Make sure that this is initialized and set to client before output
-// surface is bound to compositor.
-class SynchronousCompositorExternalBeginFrameSource
-    : public cc::BeginFrameSourceBase {
- public:
-  SynchronousCompositorExternalBeginFrameSource(
-      int routing_id,
-      SynchronousCompositorRegistry* registry);
-  ~SynchronousCompositorExternalBeginFrameSource() override;
-
-  void BeginFrame(const cc::BeginFrameArgs& args);
-  void SetClient(SynchronousCompositorExternalBeginFrameSourceClient* client);
-  using cc::BeginFrameSourceBase::SetBeginFrameSourcePaused;
-
-  // cc::BeginFrameSourceBase implementation.
-  void OnNeedsBeginFramesChanged(bool needs_begin_frames) override;
-  void AddObserver(cc::BeginFrameObserver* obs) override;
-
- private:
-  bool CalledOnValidThread() const;
-
-  const int routing_id_;
-  SynchronousCompositorRegistry* const registry_;
-  bool registered_;
-
-  // Not owned.
-  SynchronousCompositorExternalBeginFrameSourceClient* client_;
-
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorExternalBeginFrameSource);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_EXTERNAL_BEGIN_FRAME_SOURCE_H_