Don't trigger a link resource fetch on media change.

third_party/WebKit/Source/web/tests/WebFrameTest.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 6798 matching lines @@
 };
 
 TEST_P(ParameterizedWebFrameTest, NotifyManifestChange)
 {
     registerMockedHttpURLLoad("link-manifest-change.html");
 
     ManifestChangeWebFrameClient webFrameClient;
     FrameTestHelpers::WebViewHelper webViewHelper(this);
     webViewHelper.initializeAndLoad(m_baseURL + "link-manifest-change.html", true, &webFrameClient);
 
-    EXPECT_EQ(14, webFrameClient.manifestChangeCount());
+    EXPECT_EQ(13, webFrameClient.manifestChangeCount());
 }
 
 static PassRefPtrWillBeRawPtr<Resource> fetchManifest(Document* document, const KURL& url)
 {
     FetchRequest fetchRequest = FetchRequest(ResourceRequest(url), FetchInitiatorInfo());
     fetchRequest.mutableResourceRequest().setRequestContext(WebURLRequest::RequestContextManifest);
 
     return RawResource::fetchSynchronously(fetchRequest, document->fetcher());
 }
 
@@ skipping 1683 matching lines @@
 }
 
 TEST_F(WebFrameVisibilityChangeTest, RemoteFrameParentVisibilityChange)
 {
     swapLocalFrameToRemoteFrame();
     executeScriptOnMainFrame(WebScriptSource("document.querySelector('iframe').parentElement.style.display = 'none';"));
     EXPECT_FALSE(remoteFrameClient()->isVisible());
 }
 
 } // namespace blink