cc: Control defer_commits logic by Scheduler

cc/scheduler/scheduler_state_machine_unittest.cc

Index: cc/scheduler/scheduler_state_machine_unittest.cc
diff --git a/cc/scheduler/scheduler_state_machine_unittest.cc b/cc/scheduler/scheduler_state_machine_unittest.cc
index 1f377b5a1ca182404c3ca15aa90f604b024b96aa..7c6dc63601a09196a99cb26e28e4322bf43b2a65 100644
--- a/cc/scheduler/scheduler_state_machine_unittest.cc
+++ b/cc/scheduler/scheduler_state_machine_unittest.cc
@@ -1929,5 +1929,26 @@ TEST(SchedulerStateMachineTest, TestForwardBeginFramesToChildren) {
   EXPECT_TRUE(state.BeginFrameNeeded());
 }
 
+TEST(SchedulerStateMachineTest, TestDeferCommit) {
+  SchedulerSettings settings;
+  StateMachine state(settings);
+  state.SetCanStart();
+  state.UpdateState(state.NextAction());
+  state.CreateAndInitializeOutputSurfaceWithActivatedCommit();
+  state.SetVisible(true);
+  state.SetCanDraw(true);
+
+  state.SetDeferCommits(true);

[enne (OOO), 2015/01/23 01:35:21]

Can you make this test set defer commits back to false and verify that it goes
back to the right state?

[simonhong, 2015/01/28 19:44:24]

Done.

+
+  state.SetNeedsCommit();
+  EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_NONE);
+
+  state.OnBeginImplFrame(CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE));
+  EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_NONE);
+
+  state.OnBeginImplFrameDeadline();
+  EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_NONE);
+}
+
 }  // namespace
 }  // namespace cc