Remove external begin frame source parameter and settings

cc/trees/single_thread_proxy.h

 // Copyright 2011 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_TREES_SINGLE_THREAD_PROXY_H_
 #define CC_TREES_SINGLE_THREAD_PROXY_H_
 
 #include <limits>
 
 #include "base/cancelable_callback.h"
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "cc/output/begin_frame_args.h"
 #include "cc/scheduler/scheduler.h"
 #include "cc/trees/blocking_task_runner.h"
 #include "cc/trees/layer_tree_host_impl.h"
 #include "cc/trees/proxy.h"
 #include "cc/trees/task_runner_provider.h"
 
 namespace cc {
 
 class AnimationEvents;
 class BeginFrameSource;
 class ContextProvider;
 class LayerTreeHostInProcess;
 class LayerTreeHostSingleThreadClient;
 
 class CC_EXPORT SingleThreadProxy : public Proxy,
                                     NON_EXPORTED_BASE(LayerTreeHostImplClient),
-                                    SchedulerClient {
+                                    public SchedulerClient {
  public:
   static std::unique_ptr<Proxy> Create(
       LayerTreeHostInProcess* layer_tree_host,
       LayerTreeHostSingleThreadClient* client,
       TaskRunnerProvider* task_runner_provider_);
   ~SingleThreadProxy() override;
 
   // Proxy implementation
   bool IsStarted() const override;
   bool CommitToActiveTree() const override;
   void SetCompositorFrameSink(
       CompositorFrameSink* compositor_frame_sink) override;
   void ReleaseCompositorFrameSink() override;
   void SetVisible(bool visible) override;
   void SetNeedsAnimate() override;
   void SetNeedsUpdateLayers() override;
   void SetNeedsCommit() override;
   void SetNeedsRedraw(const gfx::Rect& damage_rect) override;
   void SetNextCommitWaitsForActivation() override;
   void NotifyInputThrottledUntilCommit() override {}
   void SetDeferCommits(bool defer_commits) override;
   bool CommitRequested() const override;
   bool BeginMainFrameRequested() const override;
   void MainThreadHasStoppedFlinging() override {}
-  void Start(
-      std::unique_ptr<BeginFrameSource> external_begin_frame_source) override;
+  void Start() override;
   void Stop() override;
   void SetMutator(std::unique_ptr<LayerTreeMutator> mutator) override;
   bool SupportsImplScrolling() const override;
   bool MainFrameWillHappenForTesting() override;
   void UpdateTopControlsState(TopControlsState constraints,
                               TopControlsState current,
                               bool animate) override;
 
   // SchedulerClient implementation
   void WillBeginImplFrame(const BeginFrameArgs& args) override;
@@ skipping 59 matching lines @@
   LayerTreeHostInProcess* layer_tree_host_;
   LayerTreeHostSingleThreadClient* client_;
 
   TaskRunnerProvider* task_runner_provider_;
 
   // Used on the Thread, but checked on main thread during
   // initialization/shutdown.
   std::unique_ptr<LayerTreeHostImpl> layer_tree_host_impl_;
 
   // Accessed from both threads.
-  std::unique_ptr<BeginFrameSource> external_begin_frame_source_;
   std::unique_ptr<Scheduler> scheduler_on_impl_thread_;
 
   std::unique_ptr<BlockingTaskRunner::CapturePostTasks>
       commit_blocking_task_runner_;
   bool next_frame_is_newly_committed_frame_;
 
 #if DCHECK_IS_ON()
   bool inside_impl_frame_;
 #endif
   bool inside_draw_;
@@ skipping 88 matching lines @@
  private:
   DebugScopedSetImplThread impl_thread_;
   DebugScopedSetMainThreadBlocked main_thread_blocked_;
 
   DISALLOW_COPY_AND_ASSIGN(DebugScopedSetImplThreadAndMainThreadBlocked);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_SINGLE_THREAD_PROXY_H_