Mojo interfaces needed for switching audio rendering stream creation and closing from IPC to Mojo

content/renderer/media/audio_message_filter.cc

Index: content/renderer/media/audio_message_filter.cc
diff --git a/content/renderer/media/audio_message_filter.cc b/content/renderer/media/audio_message_filter.cc
index 9e7322d128e65f0d5f9507a544c8cf01943e7d16..4d034742ff9ded7f62fde7027d3f9c7c872008bf 100644
--- a/content/renderer/media/audio_message_filter.cc
+++ b/content/renderer/media/audio_message_filter.cc
@@ -10,6 +10,7 @@
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "content/common/media/audio_messages.h"
+#include "content/renderer/media/audio_output_client.h"
 #include "content/renderer/media/webrtc_logging.h"
 #include "content/renderer/render_thread_impl.h"
 #include "ipc/ipc_logging.h"
@@ -77,6 +78,7 @@ AudioMessageFilter::AudioOutputIPCImpl::~AudioOutputIPCImpl() {}
 
 std::unique_ptr<media::AudioOutputIPC> AudioMessageFilter::CreateAudioOutputIPC(
     int render_frame_id) {
+
   DCHECK_GT(render_frame_id, 0);
   return std::unique_ptr<media::AudioOutputIPC>(
       new AudioOutputIPCImpl(this, render_frame_id));
@@ -106,8 +108,8 @@ void AudioMessageFilter::AudioOutputIPCImpl::CreateStream(
   if (stream_id_ == kStreamIDNotSet)
     stream_id_ = filter_->delegates_.Add(delegate);
 
-  filter_->Send(
-      new AudioHostMsg_CreateStream(stream_id_, render_frame_id_, params));
+  filter_->audio_output_client_->CreateStream(stream_id_, render_frame_id_,
+                                              params);
   stream_created_ = true;
 }
 
@@ -124,7 +126,8 @@ void AudioMessageFilter::AudioOutputIPCImpl::PauseStream() {
 void AudioMessageFilter::AudioOutputIPCImpl::CloseStream() {
   DCHECK(filter_->io_task_runner_->BelongsToCurrentThread());
   DCHECK_NE(stream_id_, kStreamIDNotSet);
-  filter_->Send(new AudioHostMsg_CloseStream(stream_id_));
+  filter_->audio_output_client_->CloseStream(stream_id_);
+
   filter_->delegates_.Remove(stream_id_);
   stream_id_ = kStreamIDNotSet;
   stream_created_ = false;
@@ -149,7 +152,6 @@ bool AudioMessageFilter::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AudioMessageFilter, message)
     IPC_MESSAGE_HANDLER(AudioMsg_NotifyDeviceAuthorized, OnDeviceAuthorized)
-    IPC_MESSAGE_HANDLER(AudioMsg_NotifyStreamCreated, OnStreamCreated)
     IPC_MESSAGE_HANDLER(AudioMsg_NotifyStreamStateChanged, OnStreamStateChanged)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
@@ -203,7 +205,6 @@ void AudioMessageFilter::OnStreamCreated(
     base::SyncSocket::TransitDescriptor socket_descriptor,
     uint32_t length) {
   DCHECK(io_task_runner_->BelongsToCurrentThread());
-
   WebRtcLogMessage(base::StringPrintf(
       "AMF::OnStreamCreated. stream_id=%d",
       stream_id));