cc: Throttle swaps in Scheduler instead of OutputSurface

cc/test/scheduler_test_common.h

Index: cc/test/scheduler_test_common.h
diff --git a/cc/test/scheduler_test_common.h b/cc/test/scheduler_test_common.h
index 46e6012d306afc1a89246b411f2e13535fae5379..828ba2f27edacc8d7cd7d9e6d3e7ed39f57a8eda 100644
--- a/cc/test/scheduler_test_common.h
+++ b/cc/test/scheduler_test_common.h
@@ -47,12 +47,10 @@ class FakeDelayBasedTimeSource : public DelayBasedTimeSource {
   base::TimeTicks now_;
 };
 
-class FakeFrameRateController : public FrameRateController {
+class FakeBeginFrameSource : public BeginFrameSource {
  public:
-  explicit FakeFrameRateController(scoped_refptr<TimeSource> timer)
-      : FrameRateController(timer) {}
-
-  int NumFramesPending() const { return num_frames_pending_; }
+  explicit FakeBeginFrameSource(scoped_refptr<TimeSource> timer)
+      : BeginFrameSource(timer) {}
 };
 
 }  // namespace cc