cc: Remove unnecessary task runner refptrs from schedulers.

cc/surfaces/display_scheduler.h

 // Copyright 2015 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_SURFACES_DISPLAY_SCHEDULER_H_
 #define CC_SURFACES_DISPLAY_SCHEDULER_H_
 
 #include "base/cancelable_callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 12 matching lines @@
  public:
   virtual ~DisplaySchedulerClient() {}
 
   virtual bool DrawAndSwap() = 0;
 };
 
 class CC_SURFACES_EXPORT DisplayScheduler : public BeginFrameObserverBase {
  public:
   DisplayScheduler(DisplaySchedulerClient* client,
                    BeginFrameSource* begin_frame_source,
-                   scoped_refptr<base::SingleThreadTaskRunner> task_runner,
+                   base::SingleThreadTaskRunner* task_runner,
                    int max_pending_swaps);
   ~DisplayScheduler() override;
 
   void SetRootSurfaceResourcesLocked(bool locked);
   void ForceImmediateSwapIfPossible();
   virtual void EntireDisplayDamaged(SurfaceId root_surface_id);
   virtual void SurfaceDamaged(SurfaceId surface_id);
 
   virtual void DidSwapBuffers();
   void DidSwapBuffersComplete();
 
   void OutputSurfaceLost();
 
   // BeginFrameObserverBase implementation
   bool OnBeginFrameDerivedImpl(const BeginFrameArgs& args) override;
 
  protected:
   base::TimeTicks DesiredBeginFrameDeadlineTime();
   virtual void ScheduleBeginFrameDeadline();
   void AttemptDrawAndSwap();
   void OnBeginFrameDeadline();
   void DrawAndSwap();
 
   DisplaySchedulerClient* client_;
   BeginFrameSource* begin_frame_source_;
-  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+  base::SingleThreadTaskRunner* task_runner_;
 
   BeginFrameArgs current_begin_frame_args_;
   base::Closure begin_frame_deadline_closure_;
   base::CancelableClosure begin_frame_deadline_task_;
   base::TimeTicks begin_frame_deadline_task_time_;
 
   bool output_surface_lost_;
   bool root_surface_resources_locked_;
 
   bool inside_begin_frame_deadline_interval_;
@@ skipping 14 matching lines @@
 
   base::WeakPtrFactory<DisplayScheduler> weak_ptr_factory_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DisplayScheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_DISPLAY_SCHEDULER_H_