cc: Control defer_commits logic by Scheduler

cc/scheduler/scheduler_state_machine_unittest.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/scheduler/scheduler_state_machine.h"
 
 #include "base/debug/trace_event.h"
 #include "cc/scheduler/scheduler.h"
 #include "cc/test/begin_frame_args_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 1820 matching lines @@
   state.UpdateState(state.NextAction());
   state.CreateAndInitializeOutputSurfaceWithActivatedCommit();
   state.SetVisible(true);
   state.SetCanDraw(true);
 
   EXPECT_FALSE(state.BeginFrameNeeded());
   state.SetChildrenNeedBeginFrames(true);
   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);
+
+  state.SetNeedsCommit();
+  EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_NONE);
+
+  state.OnBeginImplFrame(CreateBeginFrameArgsForTesting());

[brianderson, 2014/12/03 02:12:10]

EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_NONE);?

[simonhong, 2015/01/19 14:53:33]

Done.

+
+  state.OnBeginImplFrameDeadlinePending();

[brianderson, 2014/12/03 02:12:10]

EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_NONE);?

[simonhong, 2015/01/19 14:53:33]

This is removed.

+  state.OnBeginImplFrameDeadline();
+  EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_NONE);
+}
+
 }  // namespace
 }  // namespace cc