cc: Emulate BeginFrame in OutputSurfaces that don't support it natively

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 b3b2c2dd128b798ca7acd54dca66f4612706cf19..8834e62b7db914b8e7b1b9f9acdb4337ce848521 100644
--- a/cc/test/scheduler_test_common.h
+++ b/cc/test/scheduler_test_common.h
@@ -62,36 +62,6 @@ class FakeThread : public cc::Thread {
   bool run_pending_task_on_overwrite_;
 };
 
-class FakeTimeSource : public cc::TimeSource {
- public:
-  FakeTimeSource() : active_(false), client_(0) {}
-
-  virtual void SetClient(cc::TimeSourceClient* client) OVERRIDE;
-  virtual void SetActive(bool b) OVERRIDE;
-  virtual bool Active() const OVERRIDE;
-  virtual void SetTimebaseAndInterval(base::TimeTicks timebase,
-                                      base::TimeDelta interval) OVERRIDE {}
-  virtual base::TimeTicks LastTickTime() OVERRIDE;
-  virtual base::TimeTicks NextTickTime() OVERRIDE;
-
-  void Tick() {
-    ASSERT_TRUE(active_);
-    if (client_)
-      client_->OnTimerTick();
-  }
-
-  void SetNextTickTime(base::TimeTicks next_tick_time) {
-    next_tick_time_ = next_tick_time;
-  }
-
- protected:
-  virtual ~FakeTimeSource() {}
-
-  bool active_;
-  base::TimeTicks next_tick_time_;
-  cc::TimeSourceClient* client_;
-};
-
 class FakeDelayBasedTimeSource : public cc::DelayBasedTimeSource {
  public:
   static scoped_refptr<FakeDelayBasedTimeSource> Create(