Reduce usage of MessageLoopProxy in base/

content/browser/devtools/tethering_handler.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_DEVTOOLS_TETHERING_HANDLER_H_
 #define CONTENT_BROWSER_DEVTOOLS_TETHERING_HANDLER_H_
 
 #include <map>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/devtools/devtools_protocol.h"
 
+namespace base {
+class MessageLoopProxy;
+}  // namespace base
+
 namespace content {
 
 class DevToolsHttpHandlerDelegate;
 
 // This class implements reversed tethering handler.
 class TetheringHandler : public DevToolsProtocol::Handler {
  public:
   TetheringHandler(DevToolsHttpHandlerDelegate* delegate,
                    scoped_refptr<base::MessageLoopProxy> message_loop_proxy);
   virtual ~TetheringHandler();
@@ skipping 20 matching lines @@
   base::WeakPtrFactory<TetheringHandler> weak_factory_;
 
   static TetheringImpl* impl_;
 
   DISALLOW_COPY_AND_ASSIGN(TetheringHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_TETHERING_HANDLER_H_