Remove MockMediaInternals and incestuous usage.

content/test/webrtc_audio_device_test.cc

Index: content/test/webrtc_audio_device_test.cc
diff --git a/content/test/webrtc_audio_device_test.cc b/content/test/webrtc_audio_device_test.cc
index 605713acda3dd17ae398f597820fb7926b05ed31..6237cfae71ad0505a6cbe734686ea02f004b8582 100644
--- a/content/test/webrtc_audio_device_test.cc
+++ b/content/test/webrtc_audio_device_test.cc
@@ -284,7 +284,7 @@ void MAYBE_WebRTCAudioDeviceTest::InitializeIOThread(const char* thread_name) {
   MockRTCResourceContext* resource_context =
       static_cast<MockRTCResourceContext*>(resource_context_.get());
   resource_context->set_request_context(test_request_context_.get());
-  media_internals_.reset(new MockMediaInternals());
+  media_internals_ = MediaInternals::GetInstance();
 
   // Create our own AudioManager, AudioMirroringManager and MediaStreamManager.
   audio_manager_.reset(media::AudioManager::Create());
@@ -319,7 +319,7 @@ void MAYBE_WebRTCAudioDeviceTest::CreateChannel(const char* name) {
   static const int kRenderProcessId = 1;
   audio_render_host_ = new TestAudioRendererHost(
       kRenderProcessId, audio_manager_.get(), mirroring_manager_.get(),
-      media_internals_.get(), media_stream_manager_.get(), channel_.get());
+      media_internals_, media_stream_manager_.get(), channel_.get());

[acolwell GONE FROM CHROMIUM, 2013/11/22 19:12:48]

This appears to be the only use of media_internals_. Can't you just use
MediaInternals::GetInstance() here and remove the need for the member variable?

[DaleCurtis, 2013/11/22 20:33:33]

Done.

   audio_render_host_->set_peer_pid_for_testing(base::GetCurrentProcId());
 
   audio_input_renderer_host_ =