Remove external begin frame source parameter and settings

cc/scheduler/scheduler.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_SCHEDULER_SCHEDULER_H_
 #define CC_SCHEDULER_SCHEDULER_H_
 
 #include <deque>
 #include <memory>
 #include <string>
@@ skipping 36 matching lines @@
   virtual void ScheduledActionInvalidateCompositorFrameSink() = 0;
   virtual void DidFinishImplFrame() = 0;
   virtual void SendBeginMainFrameNotExpectedSoon() = 0;
 
  protected:
   virtual ~SchedulerClient() {}
 };
 
 class CC_EXPORT Scheduler : public BeginFrameObserverBase {
  public:
-  static std::unique_ptr<Scheduler> Create(
-      SchedulerClient* client,
-      const SchedulerSettings& scheduler_settings,
-      int layer_tree_host_id,
-      base::SingleThreadTaskRunner* task_runner,
-      BeginFrameSource* begin_frame_source,
-      std::unique_ptr<CompositorTimingHistory> compositor_timing_history);
-
+  Scheduler(SchedulerClient* client,
+            const SchedulerSettings& scheduler_settings,
+            int layer_tree_host_id,
+            base::SingleThreadTaskRunner* task_runner,
+            std::unique_ptr<CompositorTimingHistory> compositor_timing_history);
   ~Scheduler() override;
 
   // BeginFrameObserverBase
   void OnBeginFrameSourcePausedChanged(bool paused) override;
   bool OnBeginFrameDerivedImpl(const BeginFrameArgs& args) override;
 
   void OnDrawForCompositorFrameSink(bool resourceless_software_draw);
 
   const SchedulerSettings& settings() const { return settings_; }
 
@@ skipping 56 matching lines @@
 
   std::unique_ptr<base::trace_event::ConvertableToTraceFormat> AsValue() const;
 
   void SetVideoNeedsBeginFrames(bool video_needs_begin_frames);
 
   const BeginFrameSource* begin_frame_source() const {
     return begin_frame_source_;
   }
 
  protected:
-  Scheduler(SchedulerClient* client,
-            const SchedulerSettings& scheduler_settings,
-            int layer_tree_host_id,
-            base::SingleThreadTaskRunner* task_runner,
-            BeginFrameSource* begin_frame_source,
-            std::unique_ptr<CompositorTimingHistory> compositor_timing_history);
-
   // Virtual for testing.
   virtual base::TimeTicks Now() const;
 
   const SchedulerSettings settings_;
   // Not owned.
   SchedulerClient* client_;
   int layer_tree_host_id_;
   base::SingleThreadTaskRunner* task_runner_;
 
   // Not owned.  May be null.
@@ skipping 49 matching lines @@
   }
 
   base::WeakPtrFactory<Scheduler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Scheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_SCHEDULER_SCHEDULER_H_