First step towards moving AudioDevice from content/ to media/audio.

content/browser/renderer_host/media/audio_renderer_host_unittest.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 "base/bind.h"
 #include "base/environment.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/process_util.h"
 #include "base/sync_socket.h"
@@ skipping 100 matching lines @@
 #else
     sync_socket_handle = socket_descriptor.fd;
 #endif
     sync_socket_.reset(new base::SyncSocket(sync_socket_handle));
 
     // And then delegate the call to the mock method.
     OnStreamCreated(stream_id, length);
   }
 
   void OnStreamStateChanged(const IPC::Message& msg, int stream_id,
-                            AudioStreamState state) {
-    if (state == kAudioStreamPlaying) {
-      OnStreamPlaying(stream_id);
-    } else if (state == kAudioStreamPaused) {
-      OnStreamPaused(stream_id);
-    } else if (state == kAudioStreamError) {
-      OnStreamError(stream_id);
-    } else {
-      FAIL() << "Unknown stream state";
+                            media::AudioOutputIPCDelegate::State state) {
+    switch (state) {
+      case media::AudioOutputIPCDelegate::kPlaying:
+        OnStreamPlaying(stream_id);
+        break;
+      case media::AudioOutputIPCDelegate::kPaused:
+        OnStreamPaused(stream_id);
+        break;
+      case media::AudioOutputIPCDelegate::kError:
+        OnStreamError(stream_id);
+        break;
+      default:
+        FAIL() << "Unknown stream state";
+        break;
     }
   }
 
   void OnStreamVolume(const IPC::Message& msg, int stream_id, double volume) {
     OnStreamVolume(stream_id, volume);
   }
 
   scoped_ptr<base::SharedMemory> shared_memory_;
   scoped_ptr<base::SyncSocket> sync_socket_;
   uint32 shared_memory_length_;
@@ skipping 258 matching lines @@
     EnableRealDevice();
 
   Create();
   Play();
   SimulateError();
   Close();
 }
 
 
 // TODO(hclam): Add tests for data conversation in low latency mode.