Merge AudioRendererImpl and AudioRendererBase; add NullAudioSink

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 25 matching lines @@
 static bool IsRunningHeadless() {
   scoped_ptr<base::Environment> env(base::Environment::Create());
   if (env->HasVar("CHROME_HEADLESS"))
     return true;
   return false;
 }
 
 class MockAudioRendererHost : public AudioRendererHost {
  public:
   explicit MockAudioRendererHost(
-      media::AudioManager* audio_manager,
-      content::MediaObserver* media_observer)
-      : AudioRendererHost(audio_manager, media_observer),
+      content::ResourceContext* resource_context,
+      media::AudioManager* audio_manager)
+      : AudioRendererHost(resource_context, audio_manager),
         shared_memory_length_(0) {
   }
 
   virtual ~MockAudioRendererHost() {
     // Make sure all audio streams have been deleted.
     EXPECT_EQ(0u, audio_entries_.size());
   }
 
   // A list of mock methods.
   MOCK_METHOD2(OnStreamCreated,
@@ skipping 345 matching lines @@
     EnableRealDevice();
 
   Create();
   Play();
   SimulateError();
   Close();
 }
 
 
 // TODO(hclam): Add tests for data conversation in low latency mode.