[scheduler] Remove blink::scheduler::TaskQueue from public API.

third_party/WebKit/Source/platform/scheduler/child/scheduler_helper.h

 // Copyright 2015 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 THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_CHILD_SCHEDULER_HELPER_H_
 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_CHILD_SCHEDULER_HELPER_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
@@ skipping 27 matching lines @@
 
   // There is a small overhead to recording task delay histograms, we may not
   // wish to do this on all threads.
   void SetRecordTaskDelayHistograms(bool record_task_delay_histograms);
 
   // TaskQueueManager::Observer implementation:
   void OnUnregisterTaskQueue(const scoped_refptr<TaskQueue>& queue) override;
   void OnTriedToExecuteBlockedTask(const TaskQueue& queue,
                                    const base::PendingTask& task) override;
 
-  // Returns the default task runner.
-  scoped_refptr<TaskQueue> DefaultTaskRunner();
+  // Returns the default task queue.
+  scoped_refptr<TaskQueue> DefaultTaskQueue();
 
-  // Returns the control task runner.  Tasks posted to this runner are executed
+  // Returns the control task queue.  Tasks posted to this queue are executed
   // with the highest priority. Care must be taken to avoid starvation of other
   // task queues.
-  scoped_refptr<TaskQueue> ControlTaskRunner();
+  scoped_refptr<TaskQueue> ControlTaskQueue();
 
   // Adds or removes a task observer from the scheduler. The observer will be
   // notified before and after every executed task. These functions can only be
   // called on the thread this class was created on.
   void AddTaskObserver(base::MessageLoop::TaskObserver* task_observer);
   void RemoveTaskObserver(base::MessageLoop::TaskObserver* task_observer);
 
   void AddTaskTimeObserver(TaskTimeObserver* task_time_observer);
   void RemoveTaskTimeObserver(TaskTimeObserver* task_time_observer);
 
   // Shuts down the scheduler by dropping any remaining pending work in the work
-  // queues. After this call any work posted to the task runners will be
+  // queues. After this call any work posted to the task queue will be
   // silently dropped.
   void Shutdown();
 
   // Returns true if Shutdown() has been called. Otherwise returns false.
   bool IsShutdown() const { return !task_queue_manager_.get(); }
 
   inline void CheckOnValidThread() const {
     DCHECK(thread_checker_.CalledOnValidThread());
   }
 
@@ skipping 49 matching lines @@
   const char* tracing_category_;
   const char* disabled_by_default_tracing_category_;
 
   DISALLOW_COPY_AND_ASSIGN(SchedulerHelper);
 };
 
 }  // namespace scheduler
 }  // namespace blink
 
 #endif  // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_CHILD_SCHEDULER_HELPER_H_