cc: Don't attempt main thread synchronization if it is slow.

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 ffbc244777aa93bd06b81bdba6241145f0923e8b..85f9bd20d3eb2fb85bb6c4e1a1fd8cbacf232c4f 100644
--- a/cc/test/scheduler_test_common.cc
+++ b/cc/test/scheduler_test_common.cc
@@ -85,6 +85,9 @@ FakeCompositorTimingHistory::~FakeCompositorTimingHistory() {
 
 void FakeCompositorTimingHistory::SetAllEstimatesTo(base::TimeDelta duration) {
   begin_main_frame_to_commit_duration_ = duration;
+  begin_main_frame_queue_duration_critical_ = duration;
+  begin_main_frame_queue_duration_not_critical_ = duration;
+  begin_main_frame_start_to_commit_duration_ = duration;
   commit_to_ready_to_activate_duration_ = duration;
   prepare_tiles_duration_ = duration;
   activate_duration_ = duration;
@@ -96,6 +99,22 @@ void FakeCompositorTimingHistory::SetBeginMainFrameToCommitDurationEstimate(
   begin_main_frame_to_commit_duration_ = duration;
 }
 
+void FakeCompositorTimingHistory::
+    SetBeginMainFrameQueueDurationCriticalEstimate(base::TimeDelta duration) {
+  begin_main_frame_queue_duration_critical_ = duration;
+}
+
+void FakeCompositorTimingHistory::
+    SetBeginMainFrameQueueDurationNotCriticalEstimate(
+        base::TimeDelta duration) {
+  begin_main_frame_queue_duration_not_critical_ = duration;
+}
+
+void FakeCompositorTimingHistory::
+    SetBeginMainFrameStartToCommitDurationEstimate(base::TimeDelta duration) {
+  begin_main_frame_start_to_commit_duration_ = duration;
+}
+
 void FakeCompositorTimingHistory::SetCommitToReadyToActivateDurationEstimate(
     base::TimeDelta duration) {
   commit_to_ready_to_activate_duration_ = duration;
@@ -122,6 +141,24 @@ FakeCompositorTimingHistory::BeginMainFrameToCommitDurationEstimate() const {
 }
 
 base::TimeDelta
+FakeCompositorTimingHistory::BeginMainFrameQueueDurationCriticalEstimate()
+    const {
+  return begin_main_frame_queue_duration_critical_;
+}
+
+base::TimeDelta
+FakeCompositorTimingHistory::BeginMainFrameQueueDurationNotCriticalEstimate()
+    const {
+  return begin_main_frame_queue_duration_not_critical_;
+}
+
+base::TimeDelta
+FakeCompositorTimingHistory::BeginMainFrameStartToCommitDurationEstimate()
+    const {
+  return begin_main_frame_start_to_commit_duration_;
+}
+
+base::TimeDelta
 FakeCompositorTimingHistory::CommitToReadyToActivateDurationEstimate() const {
   return commit_to_ready_to_activate_duration_;
 }