Assert RendererScheduler thread usage

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 "base/threading/thread_checker.h"
@@ skipping 67 matching lines @@
 
     // Set the flag. May only be called if |write_lock| is held.
     void SetLocked(bool value);
 
     // Returns true iff the flag was set to true.
     bool IsSet() const;
 
    private:
     base::subtle::Atomic32 flag_;
     base::Lock* write_lock_;  // Not owned.
-    base::ThreadChecker thread_checker_;
 
     DISALLOW_COPY_AND_ASSIGN(PollableNeedsUpdateFlag);
   };
 
   // Returns the serialized scheduler state for tracing.
   scoped_refptr<base::debug::ConvertableToTraceFormat> AsValueLocked(
       base::TimeTicks optional_now) const;
   static const char* TaskQueueIdToString(QueueId queue_id);
   static const char* PolicyToString(Policy policy);
 
@@ skipping 52 matching lines @@
 
   base::WeakPtr<RendererSchedulerImpl> weak_renderer_scheduler_ptr_;
   base::WeakPtrFactory<RendererSchedulerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererSchedulerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_IMPL_H_