Revert "content: Remove use of MessageLoopProxy and deprecated MessageLoop APIs"

content/browser/gamepad/gamepad_provider.h

 // Copyright (c) 2012 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_BROWSER_GAMEPAD_GAMEPAD_PROVIDER_H_
 #define CONTENT_BROWSER_GAMEPAD_GAMEPAD_PROVIDER_H_
 
 #include <utility>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/memory/weak_ptr.h"
+#include "base/message_loop/message_loop_proxy.h"
 #include "base/synchronization/lock.h"
 #include "base/system_monitor/system_monitor.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebGamepads.h"
 
 namespace base {
-class SingleThreadTaskRunner;
+class MessageLoopProxy;
 class Thread;
 }
 
 namespace content {
 
 class GamepadDataFetcher;
 struct GamepadHardwareBuffer;
 
 class CONTENT_EXPORT GamepadProvider :
   public base::SystemMonitor::DevicesChangedObserver {
@@ skipping 64 matching lines @@
   bool have_scheduled_do_poll_;
 
   // Lists all observers registered for user gestures, and the thread which
   // to issue the callbacks on. Since we always issue the callback on the
   // thread which the registration happened, and this class lives on the I/O
   // thread, the message loop proxies will normally just be the I/O thread.
   // However, this will be the main thread for unit testing.
   base::Lock user_gesture_lock_;
   struct ClosureAndThread {
     ClosureAndThread(const base::Closure& c,
-                     const scoped_refptr<base::SingleThreadTaskRunner>& m);
+                     const scoped_refptr<base::MessageLoopProxy>& m);
     ~ClosureAndThread();
 
     base::Closure closure;
-    scoped_refptr<base::SingleThreadTaskRunner> task_runner;
+    scoped_refptr<base::MessageLoopProxy> message_loop;
   };
   typedef std::vector<ClosureAndThread> UserGestureObserverVector;
   UserGestureObserverVector user_gesture_observers_;
 
   // Updated based on notification from SystemMonitor when the system devices
   // have been updated, and this notification is passed on to the data fetcher
   // to enable it to avoid redundant (and possibly expensive) is-connected
   // tests. Access to devices_changed_ must be guarded by
   // devices_changed_lock_.
   base::Lock devices_changed_lock_;
@@ skipping 35 matching lines @@
   scoped_ptr<base::Thread> polling_thread_;
 
   static GamepadProvider* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(GamepadProvider);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_PROVIDER_H_