cc: Simplify and rename MainThreadIsInHighLatency logic

cc/scheduler/scheduler.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.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/logging.h"
@@ skipping 434 matching lines @@
       SchedulerStateMachine::BEGIN_IMPL_FRAME_STATE_IDLE)
     return;
 
   begin_retro_frame_task_.Reset(begin_retro_frame_closure_);
 
   task_runner_->PostTask(FROM_HERE, begin_retro_frame_task_.callback());
 }
 
 void Scheduler::BeginImplFrameWithDeadline(const BeginFrameArgs& args) {
   bool main_thread_is_in_high_latency_mode =
-      state_machine_.MainThreadIsInHighLatencyMode();
+      state_machine_.main_thread_missed_last_deadline();
   TRACE_EVENT2("cc,benchmark", "Scheduler::BeginImplFrame", "args",
-               args.AsValue(), "main_thread_is_high_latency",
+               args.AsValue(), "main_thread_missed_last_deadline",
                main_thread_is_in_high_latency_mode);
   TRACE_COUNTER1(TRACE_DISABLED_BY_DEFAULT("cc.debug.scheduler"),
                  "MainThreadLatency", main_thread_is_in_high_latency_mode);
 
   BeginFrameArgs adjusted_args = args;
   adjusted_args.deadline -= compositor_timing_history_->DrawDurationEstimate();
 
   if (ShouldRecoverMainLatency(adjusted_args)) {
     TRACE_EVENT_INSTANT0("cc", "SkipBeginMainFrameToReduceLatency",
                          TRACE_EVENT_SCOPE_THREAD);
@@ skipping 288 matching lines @@
   // The CompositorTimingHistory will discard the first two recordings
   // just after being enabled.
   compositor_timing_history_->SetRecordingEnabled(
       state_machine_.HasInitializedOutputSurface() &&
       state_machine_.visible() && frame_source_->NeedsBeginFrames());
 }
 
 bool Scheduler::ShouldRecoverMainLatency(const BeginFrameArgs& args) const {
   DCHECK(!settings_.using_synchronous_renderer_compositor);
 
-  if (!state_machine_.MainThreadIsInHighLatencyMode())
+  if (!state_machine_.main_thread_missed_last_deadline())
     return false;
 
   // When prioritizing impl thread latency, we currently put the
   // main thread in a high latency mode. Don't try to fight it.
   if (state_machine_.impl_latency_takes_priority())
     return false;
 
   return CanCommitAndActivateBeforeDeadline(args);
 }
 
@@ skipping 40 matching lines @@
 }
 
 bool Scheduler::IsBeginMainFrameSentOrStarted() const {
   return (state_machine_.commit_state() ==
               SchedulerStateMachine::COMMIT_STATE_BEGIN_MAIN_FRAME_SENT ||
           state_machine_.commit_state() ==
               SchedulerStateMachine::COMMIT_STATE_BEGIN_MAIN_FRAME_STARTED);
 }
 
 }  // namespace cc