[Presentation API / Media Router] Clean up default pres URL logic.

chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.cc

Index: chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.cc
diff --git a/chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.cc b/chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.cc
index ffcecc2c73d7c76313e6acb8c4e8b72a92009bbe..d81c695f44044baf2dfa08f0844780bc02f7af8b 100644
--- a/chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.cc
+++ b/chrome/browser/ui/webui/media_router/media_router_dialog_controller_impl.cc
@@ -274,18 +274,18 @@ void MediaRouterDialogControllerImpl::PopulateDialog(
     return;
   }
 
-  scoped_ptr<CreatePresentationSessionRequest> presentation_request(
-      TakePresentationRequest());
+  scoped_ptr<CreatePresentationConnectionRequest> create_connection_request(
+      TakeCreateConnectionRequest());
   // TODO(imcheng): Don't create PresentationServiceDelegateImpl if it doesn't
   // exist (crbug.com/508695).
   base::WeakPtr<PresentationServiceDelegateImpl> delegate =
       PresentationServiceDelegateImpl::GetOrCreateForWebContents(initiator())
           ->GetWeakPtr();
-  if (!presentation_request.get()) {
+  if (!create_connection_request.get()) {
     media_router_ui->InitWithDefaultMediaSource(delegate);
   } else {
     media_router_ui->InitWithPresentationSessionRequest(
-        initiator(), delegate, presentation_request.Pass());
+        initiator(), delegate, create_connection_request.Pass());
   }
 }