Add support for midstream audio configuration changes.

content/renderer/media/webmediaplayer_impl.cc

Index: content/renderer/media/webmediaplayer_impl.cc
diff --git a/content/renderer/media/webmediaplayer_impl.cc b/content/renderer/media/webmediaplayer_impl.cc
index 9399476dd837e07a3435c0bdfebf7ced6fb91742..9bb9b6cda85f5262d9bb49d91356c9e32da57c29 100644
--- a/content/renderer/media/webmediaplayer_impl.cc
+++ b/content/renderer/media/webmediaplayer_impl.cc
@@ -40,6 +40,7 @@
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/command_buffer/common/mailbox_holder.h"
 #include "media/audio/null_audio_sink.h"
+#include "media/base/audio_hardware_config.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/base/filter_collection.h"
 #include "media/base/limits.h"
@@ -1177,7 +1178,9 @@ void WebMediaPlayerImpl::StartPipeline() {
       new media::AudioRendererImpl(media_loop_,
                                    audio_source_provider_.get(),
                                    audio_decoders.Pass(),
-                                   set_decryptor_ready_cb));
+                                   set_decryptor_ready_cb,
+                                   *RenderThreadImpl::current()
+                                       ->GetAudioHardwareConfig()));
   filter_collection->SetAudioRenderer(audio_renderer.Pass());
 
   // Create our video decoders and renderer.