Throw when blocking top-level navigation.

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 7921 matching lines @@
     // Create another window with a cross-origin page, and point its opener to
     // first window.
     FrameTestHelpers::WebViewHelper popupWebViewHelper;
     TestConsoleMessageWebFrameClient popupWebFrameClient;
     WebView* popupView = popupWebViewHelper.initializeAndLoad(m_chromeURL + "hello_world.html", true, &popupWebFrameClient);
     popupView->mainFrame()->setOpener(webViewHelper.webView()->mainFrame());
 
     // Attempt a blocked navigation of an opener's subframe, and ensure that
     // the error shows up on the popup (calling) window's console, rather than
     // the target window.
-    popupView->mainFrame()->executeScript(WebScriptSource("opener.frames[1].location.href='data:text/html,foo'"));
+    popupView->mainFrame()->executeScript(WebScriptSource("try { opener.frames[1].location.href='data:text/html,foo'; } catch (e) {}"));
     EXPECT_TRUE(webFrameClient.messages.isEmpty());
     ASSERT_EQ(1u, popupWebFrameClient.messages.size());
     EXPECT_TRUE(std::string::npos != popupWebFrameClient.messages[0].text.utf8().find("Unsafe JavaScript attempt to initiate navigation"));
 
     // Try setting a cross-origin iframe element's source to a javascript: URL,
     // and check that this error is also printed on the calling window.
     popupView->mainFrame()->executeScript(WebScriptSource("opener.document.querySelectorAll('iframe')[1].src='javascript:alert()'"));
     EXPECT_TRUE(webFrameClient.messages.isEmpty());
     ASSERT_EQ(2u, popupWebFrameClient.messages.size());
     EXPECT_TRUE(std::string::npos != popupWebFrameClient.messages[1].text.utf8().find("Blocked a frame"));
@@ skipping 1032 matching lines @@
     FrameTestHelpers::WebViewHelper helper;
     helper.initializeAndLoad(url, true);
     Platform::current()->getURLLoaderMockFactory()->setLoaderDelegate(nullptr);
 
     Document* document = toLocalFrame(helper.webView()->page()->mainFrame())->document();
     EXPECT_TRUE(document->isImageDocument());
     EXPECT_EQ(Resource::DecodeError, toImageDocument(document)->cachedImage()->getStatus());
 }
 
 } // namespace blink