Remove renderer_service -> media_client dependency.

media/mojo/services/default_mojo_media_client.cc

Index: media/mojo/services/default_mojo_media_client.cc
diff --git a/media/mojo/services/default_mojo_media_client.cc b/media/mojo/services/default_mojo_media_client.cc
index 47b6a36a015eb59503f98958e212ccf629955d88..31c2863b44f6c2c1a7bee7494b09edada6e6bdb1 100644
--- a/media/mojo/services/default_mojo_media_client.cc
+++ b/media/mojo/services/default_mojo_media_client.cc
@@ -8,6 +8,7 @@
 #include "media/audio/audio_manager_base.h"
 #include "media/audio/audio_output_stream_sink.h"
 #include "media/audio/fake_audio_log_factory.h"
+#include "media/base/audio_hardware_config.h"
 #include "media/base/media.h"
 #include "media/base/null_video_sink.h"
 #include "media/cdm/default_cdm_factory.h"
@@ -55,10 +56,6 @@ class DefaultMojoMediaClient : public PlatformMojoMediaClient {
                           NullVideoSink::NewFrameCB(), task_runner));
   }
 
-  const AudioHardwareConfig* GetAudioHardwareConfig() override {
-    return audio_hardware_config_.get();
-  }
-
   scoped_ptr<CdmFactory> CreateCdmFactory(
       mojo::ServiceProvider* /* service_provider */) override {
     return make_scoped_ptr(new DefaultCdmFactory());