Switch stream creation and closing in Chrome audio rendering from IPC to Mojo

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 6bb8df43f18c52bd7d062cfe36f7465a7172d4f8..ce47daa0a25de4f71663d5818b33cc7a08e411ac 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -271,6 +271,7 @@ RenderFrameHostImpl::RenderFrameHostImpl(SiteInstance* site_instance,
         static_cast<InputRouterImpl*>(render_widget_host_->input_router());
     ir->SetFrameTreeNodeId(frame_tree_node_->frame_tree_node_id());
   }
+  audio_output_impl_ = 0;
 }
 
 RenderFrameHostImpl::~RenderFrameHostImpl() {
@@ -316,6 +317,9 @@ RenderFrameHostImpl::~RenderFrameHostImpl() {
   // Notify the FrameTree that this RFH is going away, allowing it to shut down
   // the corresponding RenderViewHost if it is no longer needed.
   frame_tree_->ReleaseRenderViewHostRef(render_view_host_);
+  if (audio_output_impl_) {
+    audio_output_impl_->Reset();
+  }
 }
 
 int RenderFrameHostImpl::GetRoutingID() {
@@ -2013,6 +2017,9 @@ void RenderFrameHostImpl::RegisterMojoServices() {
   GetServiceRegistry()->AddService<shell::mojom::Connector>(base::Bind(
       &FrameMojoShell::BindRequest, base::Unretained(frame_mojo_shell_.get())));
 
+  GetServiceRegistry()->AddService(
+      base::Bind(&AudioOutputImpl::CreateService, this));
+
 #if defined(ENABLE_WEBVR)
   const base::CommandLine& browser_command_line =
       *base::CommandLine::ForCurrentProcess();