cc: Remove retro frame logic from scheduler.

cc/test/scheduler_test_common.cc

Index: cc/test/scheduler_test_common.cc
diff --git a/cc/test/scheduler_test_common.cc b/cc/test/scheduler_test_common.cc
index e9c9f619959f0761133326d0233950c6f12d9909..41cea5bc75575ae019ac252a46dcd6eece039044 100644
--- a/cc/test/scheduler_test_common.cc
+++ b/cc/test/scheduler_test_common.cc
@@ -18,7 +18,9 @@ void FakeDelayBasedTimeSourceClient::OnTimerTick() {
   tick_called_ = true;
 }
 
-base::TimeTicks FakeDelayBasedTimeSource::Now() const { return now_; }
+base::TimeTicks FakeDelayBasedTimeSource::Now() const {
+  return now_;
+}
 
 TestDelayBasedTimeSource::TestDelayBasedTimeSource(
     base::SimpleTestTickClock* now_src,
@@ -33,8 +35,7 @@ std::string TestDelayBasedTimeSource::TypeString() const {
   return "TestDelayBasedTimeSource";
 }
 
-TestDelayBasedTimeSource::~TestDelayBasedTimeSource() {
-}
+TestDelayBasedTimeSource::~TestDelayBasedTimeSource() {}
 
 std::unique_ptr<FakeCompositorTimingHistory>
 FakeCompositorTimingHistory::Create(
@@ -56,8 +57,7 @@ FakeCompositorTimingHistory::FakeCompositorTimingHistory(
       rendering_stats_instrumentation_owned_(
           std::move(rendering_stats_instrumentation)) {}
 
-FakeCompositorTimingHistory::~FakeCompositorTimingHistory() {
-}
+FakeCompositorTimingHistory::~FakeCompositorTimingHistory() {}
 
 void FakeCompositorTimingHistory::SetAllEstimatesTo(base::TimeDelta duration) {
   begin_main_frame_queue_duration_critical_ = duration;
@@ -155,13 +155,27 @@ TestScheduler::TestScheduler(
                 task_runner,
                 begin_frame_source,
                 std::move(compositor_timing_history)),
-      now_src_(now_src) {}
+      now_src_(now_src),
+      num_begin_frames_(0) {}
 
 base::TimeTicks TestScheduler::Now() const {
   return now_src_->NowTicks();
 }
 
-TestScheduler::~TestScheduler() {
+bool TestScheduler::OnBeginFrameDerivedImpl(const BeginFrameArgs& args) {
+  num_begin_frames_++;
+  return Scheduler::OnBeginFrameDerivedImpl(args);
+}
+
+base::Callback<bool(void)> TestScheduler::InCurrentFrame() const {
+  return base::Bind(&TestScheduler::InCurrentFrameCallback,
+                    base::Unretained(this), num_begin_frames_);
+}
+
+bool TestScheduler::InCurrentFrameCallback(int num_begin_frames) const {
+  return num_begin_frames_ == num_begin_frames;
 }
 
+TestScheduler::~TestScheduler() {}
+
 }  // namespace cc