Allow cc::Scheduler begin frame source to be changed

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 <stddef.h>
 
 #include <string>
@@ skipping 215 matching lines @@
     return begin_retro_frame_args_.empty();
   }
 
   bool SwapThrottled() const { return state_machine_.SwapThrottled(); }
 
   bool NeedsBeginMainFrame() const {
     return state_machine_.needs_begin_main_frame();
   }
 
   BeginFrameSource& frame_source() { return *begin_frame_source_; }
-  bool FrameProductionThrottled() {
-    return settings_.throttle_frame_production;
-  }
 
   bool MainThreadMissedLastDeadline() const {
     return state_machine_.main_thread_missed_last_deadline();
   }
 
   bool begin_frames_expected() const { return observing_begin_frame_source_; }
 
   ~TestScheduler() override;
 
   base::TimeDelta BeginImplFrameInterval() {
@@ skipping 14 matching lines @@
 
  private:
   base::SimpleTestTickClock* now_src_;
 
   DISALLOW_COPY_AND_ASSIGN(TestScheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_SCHEDULER_TEST_COMMON_H_