media: Support MojoRendererService in the browser process.

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
@@ skipping 39 matching lines @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/stream_handle.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/common/url_utils.h"
+#include "media/mojo/interfaces/media_renderer.mojom.h"
+#include "media/mojo/services/mojo_renderer_service.h"
 #include "ui/accessibility/ax_tree.h"
 #include "url/gurl.h"
 
 #if defined(OS_MACOSX)
 #include "content/browser/frame_host/popup_menu_helper_mac.h"
 #endif
 
 using base::TimeDelta;
 
 namespace content {
@@ skipping 1084 matching lines @@
 }
 
 void RenderFrameHostImpl::OnHidePopup() {
   RenderViewHostDelegateView* view =
       render_view_host_->delegate_->GetDelegateView();
   if (view)
     view->HidePopupMenu();
 }
 #endif
 
+static void CreateMediaRendererService(
+    mojo::InterfaceRequest<mojo::MediaRenderer> request) {
+  media::MojoRendererService* service = new media::MojoRendererService();
+  mojo::BindToRequest(service, &request);
+}
+
 void RenderFrameHostImpl::RegisterMojoServices() {
   GeolocationServiceContext* geolocation_service_context =
       delegate_ ? delegate_->GetGeolocationServiceContext() : NULL;
   if (geolocation_service_context) {
     // TODO(creis): Bind process ID here so that GeolocationServiceImpl
     // can perform permissions checks once site isolation is complete.
     // crbug.com/426384
     GetServiceRegistry()->AddService<GeolocationService>(
         base::Bind(&GeolocationServiceContext::CreateService,
                    base::Unretained(geolocation_service_context),
                    base::Bind(&RenderFrameHostImpl::DidUseGeolocationPermission,
                               base::Unretained(this))));
   }
 
   if (!permission_service_context_)
     permission_service_context_.reset(new PermissionServiceContext(this));
 
   GetServiceRegistry()->AddService<PermissionService>(
       base::Bind(&PermissionServiceContext::CreateService,
                  base::Unretained(permission_service_context_.get())));
+
+  GetServiceRegistry()->AddService<mojo::MediaRenderer>(

[xhwang, 2014/12/15 21:32:30]

Currently we don't want to provide this service by default on all platforms,
e.g. on Desktop. Maybe we should have a flag or ifdef for this.

[DaleCurtis, 2014/12/15 23:21:17]

I think an EXTERNAL_MEDIA_RENDERER define would work well. Alternatively if
GetServiceRegistry() is safe to call from other places, you can call it from a
more media appropriate call site. Maybe long term the service registry should do
something like PathService where each module can register their own services
locally and have them globally initialized automatically.

+      base::Bind(&CreateMediaRendererService));
 }
 
 void RenderFrameHostImpl::SetState(RenderFrameHostImplState rfh_state) {
   // Only main frames should be swapped out and retained inside a proxy host.
   if (rfh_state == STATE_SWAPPED_OUT)
     CHECK(!GetParent());
 
   // We update the number of RenderFrameHosts in a SiteInstance when the swapped
   // out status of a RenderFrameHost gets flipped to/from active.
   if (!IsRFHStateActive(rfh_state_) && IsRFHStateActive(rfh_state))
@@ skipping 411 matching lines @@
 void RenderFrameHostImpl::DidUseGeolocationPermission() {
   RenderFrameHost* top_frame = frame_tree_node()->frame_tree()->GetMainFrame();
   GetContentClient()->browser()->RegisterPermissionUsage(
       PERMISSION_GEOLOCATION,
       delegate_->GetAsWebContents(),
       GetLastCommittedURL().GetOrigin(),
       top_frame->GetLastCommittedURL().GetOrigin());
 }
 
 }  // namespace content