[Media Router] Handle multiple Presentation URLs when creating routes.

chrome/browser/media/router/presentation_request_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_request.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace media_router {
 
 TEST(PresentationRequestTest, Equals) {
   GURL frame_url("http://www.site.com/");
   std::vector<GURL> presentation_urls =
-      {GURL("http://www.example.com/presentation.html")};
+    {GURL("http://www.example.com/presentation.html"),
+     GURL("http://www.example.net/alternate.html")};
 
   PresentationRequest request1(RenderFrameHostId(1, 2), presentation_urls,
                                frame_url);
 
   // Frame IDs are different.
   PresentationRequest request2(RenderFrameHostId(3, 4), presentation_urls,
                                frame_url);
   EXPECT_FALSE(request1.Equals(request2));
 
   // Presentation URLs are different.
   PresentationRequest request3(
       RenderFrameHostId(1, 2),
-      {GURL("http://www.example.net/presentation.html")}, frame_url);
+      {GURL("http://www.example.net/presentation.html"),
+       GURL("http://www.example.com/presentation.html")}, frame_url);
   EXPECT_FALSE(request1.Equals(request3));
 
   // Frame URLs are different.
   PresentationRequest request4(RenderFrameHostId(1, 2), presentation_urls,
                                GURL("http://www.site.net/"));
   EXPECT_FALSE(request1.Equals(request4));
 
   PresentationRequest request5(
       RenderFrameHostId(1, 2),
-      {GURL("http://www.example.com/presentation.html")},
+      {GURL("http://www.example.com/presentation.html"),
+       GURL("http://www.example.net/alternate.html")},
       GURL("http://www.site.com/"));
   EXPECT_TRUE(request1.Equals(request5));
 }
 
 }  // namespace media_router