[Presentation API] (alternative) 1-UA: send message between controller and receiver page

chrome/browser/media/router/presentation_service_delegate_impl.cc

Index: chrome/browser/media/router/presentation_service_delegate_impl.cc
diff --git a/chrome/browser/media/router/presentation_service_delegate_impl.cc b/chrome/browser/media/router/presentation_service_delegate_impl.cc
index 0a40a5b3346a2fcb5d13b3d9513211d0e0366b9e..c5b54c0be1d11a4aab4bb249fde2734b8dfa38ba 100644
--- a/chrome/browser/media/router/presentation_service_delegate_impl.cc
+++ b/chrome/browser/media/router/presentation_service_delegate_impl.cc
@@ -21,6 +21,8 @@
 #include "chrome/browser/media/router/media_router_factory.h"
 #include "chrome/browser/media/router/media_sink.h"
 #include "chrome/browser/media/router/media_source_helper.h"
+#include "chrome/browser/media/router/offscreen_presentation_manager.h"
+#include "chrome/browser/media/router/offscreen_presentation_manager_factory.h"
 #include "chrome/browser/media/router/presentation_media_sinks_observer.h"
 #include "chrome/browser/media/router/route_message.h"
 #include "chrome/browser/media/router/route_message_observer.h"
@@ -31,6 +33,7 @@
 #include "content/public/browser/presentation_session.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
+#include "url/gurl.h"
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(
     media_router::PresentationServiceDelegateImpl);
@@ -41,7 +44,7 @@ namespace media_router {
 
 namespace {
 
-using DelegateObserver = content::PresentationServiceDelegate::Observer;
+using DelegateObserver = content::PresentationServiceDelegateBase::Observer;
 
 // Returns the unique identifier for the supplied RenderFrameHost.
 RenderFrameHostId GetRenderFrameHostId(RenderFrameHost* render_frame_host) {
@@ -663,6 +666,9 @@ PresentationServiceDelegateImpl::PresentationServiceDelegateImpl(
       router_(MediaRouterFactory::GetApiForBrowserContext(
           web_contents_->GetBrowserContext())),
       frame_manager_(new PresentationFrameManager(web_contents, router_)),
+      offscreen_presentation_manager_(
+          OffscreenPresentationManagerFactory::
+              GetOrCreateForControllerBrowserContext(web_contents_)),

[imcheng, 2016/11/01 17:20:29]

that means we are creating an OffscreenPresentationManager even we did not start
a 1-ua presentation. It seems to be we don't need to store it as a member of
PSDImpl since it is only called in one place.

[zhaobin, 2016/11/02 03:55:47]

Done.

       weak_factory_(this) {
   DCHECK(web_contents_);
   DCHECK(router_);
@@ -753,11 +759,13 @@ void PresentationServiceDelegateImpl::OnStartSessionSucceeded(
     int render_frame_id,
     const content::PresentationSessionStartedCallback& success_cb,
     const content::PresentationSessionInfo& new_session,
-    const MediaRoute::Id& route_id) {
+    const MediaRoute& route) {
+  const MediaRoute::Id& route_id = route.media_route_id();
   DVLOG(1) << "OnStartSessionSucceeded: "
            << "route_id: " << route_id
            << ", presentation URL: " << new_session.presentation_url
-           << ", presentation ID: " << new_session.presentation_id;
+           << ", presentation ID: " << new_session.presentation_id
+           << ", is_offscreen_presentation: " << new_session.is_offscreen;
   frame_manager_->OnPresentationSessionStarted(
       RenderFrameHostId(render_process_id, render_frame_id), new_session,
       route_id);
@@ -912,6 +920,17 @@ void PresentationServiceDelegateImpl::ListenForConnectionStateChange(
       state_changed_cb);
 }
 
+void PresentationServiceDelegateImpl::ConnectToOffscreenPresentation(
+    int render_process_id,
+    int render_frame_id,
+    const content::PresentationSessionInfo& session,
+    content::PresentationConnectionPtr connection) {
+  RenderFrameHostId render_frame_host_id(render_process_id, render_frame_id);
+  offscreen_presentation_manager_->RegisterOffscreenPresentationController(
+      session.presentation_id, GURL(session.presentation_url),
+      render_frame_host_id, std::move(connection));
+}
+
 void PresentationServiceDelegateImpl::OnRouteResponse(
     const PresentationRequest& presentation_request,
     const RouteRequestResult& result) {