Chromium roll (https://codereview.chromium.org/976353002)

cc/scheduler/scheduler_state_machine.cc

Index: cc/scheduler/scheduler_state_machine.cc
diff --git a/cc/scheduler/scheduler_state_machine.cc b/cc/scheduler/scheduler_state_machine.cc
index 4e6509f527ddc35ac7be8b8355b85111f3cbbfa7..f2f6636a277d960e9bc9b7d04da2863b04cf25ed 100644
--- a/cc/scheduler/scheduler_state_machine.cc
+++ b/cc/scheduler/scheduler_state_machine.cc
@@ -47,7 +47,6 @@ SchedulerStateMachine::SchedulerStateMachine(const SchedulerSettings& settings)
       skip_next_begin_main_frame_to_reduce_latency_(false),
       skip_begin_main_frame_to_reduce_latency_(false),
       continuous_painting_(false),
-      impl_latency_takes_priority_on_battery_(false),
       children_need_begin_frames_(false),
       defer_commits_(false) {
 }
@@ -236,8 +235,6 @@ void SchedulerStateMachine::AsValueInto(base::trace_event::TracedValue* state,
   state->SetBoolean("skip_next_begin_main_frame_to_reduce_latency",
                     skip_next_begin_main_frame_to_reduce_latency_);
   state->SetBoolean("continuous_painting", continuous_painting_);
-  state->SetBoolean("impl_latency_takes_priority_on_battery",
-                    impl_latency_takes_priority_on_battery_);
   state->SetBoolean("children_need_begin_frames", children_need_begin_frames_);
   state->SetBoolean("defer_commits", defer_commits_);
   state->EndDictionary();
@@ -903,11 +900,6 @@ bool SchedulerStateMachine::ShouldTriggerBeginImplFrameDeadlineImmediately()
   if (impl_latency_takes_priority_)
     return true;
 
-  // If we are on battery power and want to prioritize impl latency because
-  // we don't trust deadline tasks to execute at the right time.
-  if (impl_latency_takes_priority_on_battery_)
-    return true;
-
   return false;
 }