Revert of Revert of Add a WorkerScheduler and a WebThreadImplForWorker

content/renderer/scheduler/renderer_scheduler_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_IMPL_H_
 #define CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_IMPL_H_
 
 #include "base/atomicops.h"
 #include "base/synchronization/lock.h"
 #include "content/child/scheduler/scheduler_helper.h"
@@ skipping 81 matching lines @@
     base::subtle::Atomic32 flag_;
     base::Lock* write_lock_;  // Not owned.
 
     DISALLOW_COPY_AND_ASSIGN(PollableNeedsUpdateFlag);
   };
 
   // SchedulerHelperDelegate implementation:
   bool CanEnterLongIdlePeriod(
       base::TimeTicks now,
       base::TimeDelta* next_long_idle_period_delay_out) override;
+  void IsNotQuiescent() override {}
 
   // Returns the serialized scheduler state for tracing.
   scoped_refptr<base::trace_event::ConvertableToTraceFormat> AsValueLocked(
       base::TimeTicks optional_now) const;
   static const char* TaskQueueIdToString(QueueId queue_id);
   static const char* PolicyToString(Policy policy);
   static const char* InputStreamStateToString(InputStreamState state);
 
   static InputStreamState ComputeNewInputStreamState(
       InputStreamState current_state,
@@ skipping 65 matching lines @@
   PollableNeedsUpdateFlag policy_may_need_update_;
 
   base::WeakPtrFactory<RendererSchedulerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererSchedulerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_IMPL_H_