cc: Remove background ticking from LTHI.

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 4c2c267a5a493ebbbe734017265f2af8b8f7325b..bdc6594e174487a26424d7687800f2b8c428b135 100644
--- a/cc/scheduler/scheduler_state_machine_unittest.cc
+++ b/cc/scheduler/scheduler_state_machine_unittest.cc
@@ -1498,6 +1498,25 @@ TEST(SchedulerStateMachineTest,
   EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_DRAW_AND_SWAP_ABORT);
 }
 
+TEST(SchedulerStateMachineTest, TestNoBeginFrameNeededWhenInvisible) {
+  SchedulerSettings default_scheduler_settings;
+  StateMachine state(default_scheduler_settings);
+  state.SetCanStart();
+  state.UpdateState(state.NextAction());
+  state.CreateAndInitializeOutputSurfaceWithActivatedCommit();
+  state.SetVisible(true);
+
+  EXPECT_FALSE(state.BeginFrameNeeded());
+  state.SetNeedsRedraw(true);
+  EXPECT_TRUE(state.BeginFrameNeeded());
+
+  state.SetVisible(false);
+  EXPECT_FALSE(state.BeginFrameNeeded());
+
+  state.SetVisible(true);
+  EXPECT_TRUE(state.BeginFrameNeeded());
+}
+
 TEST(SchedulerStateMachineTest, TestNoBeginMainFrameWhenInvisible) {
   SchedulerSettings default_scheduler_settings;
   StateMachine state(default_scheduler_settings);
@@ -1507,6 +1526,14 @@ TEST(SchedulerStateMachineTest, TestNoBeginMainFrameWhenInvisible) {
   state.SetVisible(false);
   state.SetNeedsCommit();
   EXPECT_ACTION(SchedulerStateMachine::ACTION_NONE);
+  EXPECT_FALSE(state.BeginFrameNeeded());
+
+  // When become visible again, the needs commit should still be pending.
+  state.SetVisible(true);
+  EXPECT_TRUE(state.BeginFrameNeeded());
+  state.OnBeginImplFrame();
+  EXPECT_ACTION_UPDATE_STATE(
+      SchedulerStateMachine::ACTION_SEND_BEGIN_MAIN_FRAME);
 }
 
 TEST(SchedulerStateMachineTest, TestFinishCommitWhenCommitInProgress) {
@@ -1704,6 +1731,25 @@ TEST(SchedulerStateMachineTest,
   EXPECT_TRUE(state.ShouldTriggerBeginImplFrameDeadlineImmediately());
 }
 
+TEST(SchedulerStateMachineTest, TestTriggerDeadlineImmediatelyWhenInvisible) {
+  SchedulerSettings settings;
+  settings.impl_side_painting = true;
+  StateMachine state(settings);
+  SET_UP_STATE(state)
+
+  state.SetNeedsCommit();
+
+  state.OnBeginImplFrame();
+  EXPECT_ACTION_UPDATE_STATE(
+      SchedulerStateMachine::ACTION_SEND_BEGIN_MAIN_FRAME);
+  EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_NONE);
+  EXPECT_FALSE(state.ShouldTriggerBeginImplFrameDeadlineImmediately());
+
+  state.SetVisible(false);
+  EXPECT_ACTION_UPDATE_STATE(SchedulerStateMachine::ACTION_NONE);
+  EXPECT_TRUE(state.ShouldTriggerBeginImplFrameDeadlineImmediately());
+}
+
 TEST(SchedulerStateMachineTest, TestSetNeedsAnimate) {
   SchedulerSettings settings;
   settings.impl_side_painting = true;