Revert of 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 ca0e4410ecb86d3694737f79436e8880ba26c9b2..9d151d5faef986549262cc70c47acf79ca271443 100644
--- a/cc/scheduler/scheduler_state_machine_unittest.cc
+++ b/cc/scheduler/scheduler_state_machine_unittest.cc
@@ -1813,28 +1813,5 @@
   EXPECT_TRUE(state.BeginFrameNeeded());
 }
 
-TEST(SchedulerStateMachineTest, TestDeferCommit) {
-  SchedulerSettings settings;
-  StateMachine state(settings);
-  SET_UP_STATE(state)
-
-  state.SetDeferCommits(true);
-
-  state.SetNeedsCommit();
-  EXPECT_TRUE(state.BeginFrameNeeded());
-  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);
-
-  state.SetDeferCommits(false);
-  state.OnBeginImplFrame(CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE));
-  EXPECT_ACTION_UPDATE_STATE(
-      SchedulerStateMachine::ACTION_SEND_BEGIN_MAIN_FRAME);
-}
-
 }  // namespace
 }  // namespace cc