cc: Remove unnecessary task runner refptrs from schedulers.

cc/test/scheduler_test_common.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_TEST_SCHEDULER_TEST_COMMON_H_
 #define CC_TEST_SCHEDULER_TEST_COMMON_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 148 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(TestSyntheticBeginFrameSource);
 };
 
 class TestScheduler : public Scheduler {
  public:
   static scoped_ptr<TestScheduler> Create(
       base::SimpleTestTickClock* now_src,
       SchedulerClient* client,
       const SchedulerSettings& scheduler_settings,
       int layer_tree_host_id,
-      const scoped_refptr<OrderedSimpleTaskRunner>& task_runner,
+      OrderedSimpleTaskRunner* task_runner,
       BeginFrameSource* external_frame_source);
 
   // Extra test helper functionality
   bool IsBeginRetroFrameArgsEmpty() const {
     return begin_retro_frame_args_.empty();
   }
 
   bool CanStart() const { return state_machine_.CanStartForTesting(); }
 
   BeginFrameSource& frame_source() { return *frame_source_; }
   bool FrameProductionThrottled() { return throttle_frame_production_; }
 
   ~TestScheduler() override;
 
   base::TimeDelta BeginImplFrameInterval() {
     return begin_impl_frame_tracker_.Interval();
   }
 
  protected:
   // Overridden from Scheduler.
   base::TimeTicks Now() const override;
 
  private:
   TestScheduler(
       base::SimpleTestTickClock* now_src,
       SchedulerClient* client,
       const SchedulerSettings& scheduler_settings,
       int layer_tree_host_id,
-      const scoped_refptr<OrderedSimpleTaskRunner>& task_runner,
+      OrderedSimpleTaskRunner* task_runner,
       BeginFrameSource* external_frame_source,
       scoped_ptr<TestSyntheticBeginFrameSource> synthetic_frame_source,
       scoped_ptr<TestBackToBackBeginFrameSource> unthrottled_frame_source);
 
   // Not owned.
   base::SimpleTestTickClock* now_src_;
 
   DISALLOW_COPY_AND_ASSIGN(TestScheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_SCHEDULER_TEST_COMMON_H_