[renderer] Enable long idle times in the Blink Scheduler.

content/renderer/scheduler/renderer_scheduler_impl.cc

 // Copyright 2014 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 "content/renderer/scheduler/renderer_scheduler_impl.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
@@ skipping 20 matching lines @@
       compositor_task_runner_(
           task_queue_manager_->TaskRunnerForQueue(COMPOSITOR_TASK_QUEUE)),
       loading_task_runner_(
           task_queue_manager_->TaskRunnerForQueue(LOADING_TASK_QUEUE)),
       delayed_update_policy_runner_(
           base::Bind(&RendererSchedulerImpl::UpdatePolicy,
                      base::Unretained(this)),
           control_task_runner_),
       current_policy_(Policy::NORMAL),
       idle_period_state_(IdlePeriodState::NOT_IN_IDLE_PERIOD),
-      long_idle_periods_enabled_(false),
       last_input_type_(blink::WebInputEvent::Undefined),
       input_stream_state_(InputStreamState::INACTIVE),
       policy_may_need_update_(&incoming_signals_lock_),
       weak_factory_(this) {
   weak_renderer_scheduler_ptr_ = weak_factory_.GetWeakPtr();
   update_policy_closure_ = base::Bind(&RendererSchedulerImpl::UpdatePolicy,
                                       weak_renderer_scheduler_ptr_);
   end_idle_period_closure_.Reset(base::Bind(
       &RendererSchedulerImpl::EndIdlePeriod, weak_renderer_scheduler_ptr_));
   initiate_next_long_idle_period_closure_.Reset(base::Bind(
@@ skipping 409 matching lines @@
                "InitiateLongIdlePeriod");
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   // End any previous idle period.
   EndIdlePeriod();
 
   base::TimeTicks now(Now());
   base::TimeDelta next_long_idle_period_delay;
   IdlePeriodState new_idle_period_state =
       ComputeNewLongIdlePeriodState(now, &next_long_idle_period_delay);
-  if (long_idle_periods_enabled_ && IsInIdlePeriod(new_idle_period_state)) {
+  if (IsInIdlePeriod(new_idle_period_state)) {
     estimated_next_frame_begin_ = now + next_long_idle_period_delay;
     StartIdlePeriod(new_idle_period_state);
   }
 
   if (task_queue_manager_->IsQueueEmpty(IDLE_TASK_QUEUE)) {
     // If there are no current idle tasks then post the call to initiate the
     // next idle for execution after wakeup (at which point after-wakeup idle
     // tasks might be eligible to run or more idle tasks posted).
     control_task_after_wakeup_runner_->PostDelayedTask(
         FROM_HERE,
@@ skipping 94 matching lines @@
   DCHECK(main_thread_checker_.CalledOnValidThread());
   time_source_ = time_source;
   task_queue_manager_->SetTimeSourceForTesting(time_source);
 }
 
 void RendererSchedulerImpl::SetWorkBatchSizeForTesting(size_t work_batch_size) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   task_queue_manager_->SetWorkBatchSize(work_batch_size);
 }
 
-void RendererSchedulerImpl::SetLongIdlePeriodsEnabledForTesting(
-    bool long_idle_periods_enabled) {
-  DCHECK(main_thread_checker_.CalledOnValidThread());
-  long_idle_periods_enabled_ = long_idle_periods_enabled;
-}
-
 base::TimeTicks RendererSchedulerImpl::Now() const {
   return UNLIKELY(time_source_) ? time_source_->Now() : base::TimeTicks::Now();
 }
 
 RendererSchedulerImpl::PollableNeedsUpdateFlag::PollableNeedsUpdateFlag(
     base::Lock* write_lock_)
     : flag_(false), write_lock_(write_lock_) {
 }
 
 RendererSchedulerImpl::PollableNeedsUpdateFlag::~PollableNeedsUpdateFlag() {
@@ skipping 152 matching lines @@
 }
 
 void RendererSchedulerImpl::RemoveTaskObserver(
     base::MessageLoop::TaskObserver* task_observer) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   if (task_queue_manager_)
     task_queue_manager_->RemoveTaskObserver(task_observer);
 }
 
 }  // namespace content