Move AudioDevice and AudioInputDevice to media.

media/audio/scoped_loop_observer.cc

 // 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.
 
-#include "content/renderer/media/scoped_loop_observer.h"
+#include "media/audio/scoped_loop_observer.h"
 
 #include "base/bind.h"
 #include "base/synchronization/waitable_event.h"
 
+namespace media {
+
 ScopedLoopObserver::ScopedLoopObserver(
     const scoped_refptr<base::MessageLoopProxy>& loop)
     : loop_(loop) {
   ObserveLoopDestruction(true, NULL);
 }
 
 ScopedLoopObserver::~ScopedLoopObserver() {
   ObserveLoopDestruction(false, NULL);
 }
 
@@ skipping 14 matching lines @@
                        base::Unretained(this), enable, &event))) {
       event.Wait();
     } else {
       // The message loop's thread has already terminated, so no need to wait.
     }
   }
 
   if (done)
     done->Signal();
 }
+
+}  // namespace media.