[Media Router] Convert MediaRouter to use GURL for presentation URLs.

chrome/test/media_router/media_router_e2e_browsertest.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/test/media_router/media_router_e2e_browsertest.h"
 
 #include <vector>
 #include "base/command_line.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 140 matching lines @@
       MediaSourceForTab(tab_id), GURL(kOriginUrl), web_contents);
   Wait(base::TimeDelta::FromSeconds(30));
 
   // Wait for 10 seconds to make sure route has been stopped.
   StopMediaRoute();
   Wait(base::TimeDelta::FromSeconds(10));
 }
 
 IN_PROC_BROWSER_TEST_F(MediaRouterE2EBrowserTest, MANUAL_CastApp) {
   // Wait for 30 seconds to make sure the route is stable.
-  CreateMediaRoute(MediaSourceForPresentationUrl(kCastAppPresentationUrl),
+  CreateMediaRoute(MediaSourceForPresentationUrl(GURL(kCastAppPresentationUrl)),
                    GURL(kOriginUrl), nullptr);
   Wait(base::TimeDelta::FromSeconds(30));
 
   // Wait for 10 seconds to make sure route has been stopped.
   StopMediaRoute();
   Wait(base::TimeDelta::FromSeconds(10));
 }
 
 }  // namespace media_router