[Media Router] Move main frame check for SetDefaultPresentationUrls.

chrome/browser/media/router/presentation_service_delegate_impl_unittest.cc

 // Copyright 2015 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 "chrome/browser/media/router/presentation_service_delegate_impl.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/test/mock_callback.h"
 #include "chrome/browser/media/router/mock_media_router.h"
 #include "chrome/browser/media/router/mock_screen_availability_listener.h"
@@ skipping 316 matching lines @@
 TEST_F(PresentationServiceDelegateImplTest, AddListenerForInvalidUrl) {
   MockScreenAvailabilityListener listener(GURL("unsupported-url://foo"));
   EXPECT_CALL(listener,
               OnScreenAvailabilityChanged(
                   blink::mojom::ScreenAvailability::SOURCE_NOT_SUPPORTED));
   EXPECT_FALSE(delegate_impl_->AddScreenAvailabilityListener(
       main_frame_process_id_, main_frame_routing_id_, &listener));
   EXPECT_CALL(router_, RegisterMediaSinksObserver(_)).Times(0);
 }
 
-// TODO(imcheng): Add a test to set default presentation URL in a different
-// RenderFrameHost and verify that it is ignored.
 TEST_F(PresentationServiceDelegateImplTest, SetDefaultPresentationUrl) {
   EXPECT_FALSE(delegate_impl_->HasDefaultPresentationRequest());
 
   GURL frame_url(kFrameUrl);
   content::WebContentsTester::For(GetWebContents())
       ->NavigateAndCommit(frame_url);
 
   auto callback = base::Bind(
       &PresentationServiceDelegateImplTest::OnDefaultPresentationStarted,
       base::Unretained(this));
@@ skipping 441 matching lines @@
       base::Bind(&MockCreatePresentationConnnectionCallbacks::
                      OnCreateConnectionSuccess,
                  base::Unretained(&mock_create_connection_callbacks)),
       base::Bind(
           &MockCreatePresentationConnnectionCallbacks::OnCreateConnectionError,
           base::Unretained(&mock_create_connection_callbacks)));
 }
 #endif  // !defined(OS_ANDROID)
 
 }  // namespace media_router