cc: Remove BeginFrameSourcesConstructor.

cc/scheduler/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 CC_SCHEDULER_BEGIN_FRAME_SOURCE_H_
 #define CC_SCHEDULER_BEGIN_FRAME_SOURCE_H_
 
 #include <set>
 #include <string>
 
 #include "base/logging.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/output/begin_frame_args.h"
-#include "cc/output/vsync_parameter_observer.h"
 #include "cc/scheduler/delay_based_time_source.h"
 
 namespace cc {
 
 // (Pure) Interface for observing BeginFrame messages from BeginFrameSource
 // objects.
 class CC_EXPORT BeginFrameObserver {
  public:
   virtual ~BeginFrameObserver() {}
 
@@ skipping 169 matching lines @@
 
   void BeginFrame();
 
  private:
   base::WeakPtrFactory<BackToBackBeginFrameSource> weak_factory_;
 };
 
 // A frame source which is locked to an external parameters provides from a
 // vsync source and generates BeginFrameArgs for it.
 class CC_EXPORT SyntheticBeginFrameSource : public BeginFrameSourceBase,
-                                            public VSyncParameterObserver,
                                             public TimeSourceClient {
  public:
   static scoped_ptr<SyntheticBeginFrameSource> Create(
       base::SingleThreadTaskRunner* task_runner,
-      base::TimeTicks initial_vsync_timebase,
       base::TimeDelta initial_vsync_interval);
   ~SyntheticBeginFrameSource() override;
 
+  void OnUpdateVSyncParameters(base::TimeTicks new_vsync_timebase,
+                               base::TimeDelta new_vsync_interval);
+
   // Tracing
   void AsValueInto(base::trace_event::TracedValue* dict) const override;
 
-  // VSyncParameterObserver
-  void OnUpdateVSyncParameters(base::TimeTicks new_vsync_timebase,
-                               base::TimeDelta new_vsync_interval) override;
-
   // TimeSourceClient
   void OnTimerTick() override;
 
  protected:
   explicit SyntheticBeginFrameSource(
       scoped_refptr<DelayBasedTimeSource> time_source);
 
   BeginFrameArgs CreateBeginFrameArgs(base::TimeTicks frame_time,
                                       BeginFrameArgs::BeginFrameArgsType type);
 
@@ skipping 44 matching lines @@
 
   base::TimeDelta minimum_interval_;
 
   BeginFrameSource* active_source_;
   std::set<BeginFrameSource*> source_list_;
 };
 
 }  // namespace cc
 
 #endif  // CC_SCHEDULER_BEGIN_FRAME_SOURCE_H_