[Media Router] Support dual discovery

chrome/browser/media/router/discovery/dial/dial_media_sink_service_impl.cc

Index: chrome/browser/media/router/discovery/dial/dial_media_sink_service_impl.cc
diff --git a/chrome/browser/media/router/discovery/dial/dial_media_sink_service_impl.cc b/chrome/browser/media/router/discovery/dial/dial_media_sink_service_impl.cc
index a87915701ffe68483d1fd043e18e62a2a9525961..a81776b7e2e915d194bd0b792811d883388fccc4 100644
--- a/chrome/browser/media/router/discovery/dial/dial_media_sink_service_impl.cc
+++ b/chrome/browser/media/router/discovery/dial/dial_media_sink_service_impl.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/media/router/discovery/dial/dial_media_sink_service_impl.h"
 
 #include "chrome/browser/media/router/discovery/dial/dial_device_data.h"
+#include "chrome/browser/media/router/discovery/mdns/cast_media_sink_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/url_request/url_request_context_getter.h"
@@ -61,6 +62,11 @@ DeviceDescriptionService* DialMediaSinkServiceImpl::GetDescriptionService() {
   return description_service_.get();
 }
 
+void DialMediaSinkServiceImpl::SetDialMediaSinkServiceDelegate(
+    scoped_refptr<DialMediaSinkServiceDelegate> delegate) {
+  delegate_ = delegate;
+}
+
 void DialMediaSinkServiceImpl::SetDialRegistryForTest(
     DialRegistry* dial_registry) {
   DCHECK(!test_dial_registry_);
@@ -81,6 +87,8 @@ void DialMediaSinkServiceImpl::OnDialDeviceEvent(
 
   current_sinks_.clear();
   current_devices_ = devices;
+  if (delegate_)
+    delegate_->OnDialSinksRemoved();
 
   GetDescriptionService()->GetDeviceDescriptions(devices,
                                                  request_context_.get());
@@ -115,7 +123,10 @@ void DialMediaSinkServiceImpl::OnDeviceDescriptionAvailable(
     return;
   }
 
-  current_sinks_.insert(MediaSinkInternal(sink, extra_data));
+  MediaSinkInternal dial_sink(sink, extra_data);
+  current_sinks_.insert(dial_sink);
+  if (delegate_)
+    delegate_->OnDialSinkAdded(dial_sink);
 
   // Start fetch timer again if device description comes back after
   // |finish_timer_| fires.