Block renderer-initiated main frame navigations to data URLs

chrome/test/data/extensions/platform_apps/web_view/shim/main.js

 // Copyright (c) 2012 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.
 
 var util = {};
 var embedder = {};
 embedder.baseGuestURL = '';
 embedder.emptyGuestURL = '';
 embedder.windowOpenGuestURL = '';
 embedder.noReferrerGuestURL = '';
@@ skipping 1295 matching lines @@
 }
 
 // This test verifies that the call to executeScript will fail and return null
 // if the webview has been navigated between the time the call was made and the
 // time it arrives in the guest process.
 function testExecuteScriptIsAbortedWhenWebViewSourceIsChanged() {
   var webview = document.createElement('webview');
   webview.addEventListener('loadstop', function onLoadStop(e) {
     window.console.log('2. Inject script to trigger a guest-initiated ' +
         'navigation.');
-    var navUrl = 'data:text/html,trigger nav';
+    var navUrl = 'data:text/html, trigger nav';
     webview.executeScript({
       code: 'window.location.href = "' + navUrl + '";'
     });
 
     window.console.log('3. Listening for the load that will be started as a ' +
         'result of 2.');
     webview.addEventListener('loadstart', function onLoadStart(e) {
-      embedder.test.assertEq('about:blank', webview.src);
+      embedder.test.assertEq('data:text/html, initial page', webview.src);
       window.console.log('4. Attempting to inject script into about:blank. ' +
           'This is expected to fail.');
       webview.executeScript(
         { code: 'document.body.style.backgroundColor = "red";' },
         function(results) {
           window.console.log(
               '5. Verify that executeScript has, indeed, failed.');
           embedder.test.assertEq(null, results);
           embedder.test.assertEq(navUrl, webview.src);
           embedder.test.succeed();
         }
       );
       webview.removeEventListener('loadstart', onLoadStart);
     });
     webview.removeEventListener('loadstop', onLoadStop);
   });
 
   window.console.log('1. Performing initial navigation.');
-  webview.setAttribute('src', 'about:blank');
+  webview.setAttribute('src', 'data:text/html, initial page');
   document.body.appendChild(webview);
 }
 
 // This test verifies that, in the case where the WebView is set up with a
 // 'loadabort' handler that calls executeScript() with a script that sets
 // the WebView's 'src' to an invalid URL, and the caller then calls
 // executeScript() on that WebView with that same script (that sets 'src'
 // to an invalid URL), that loadabort will get called in both cases (and
 // that the browser does not crash during the second call to executeScript()).
 function testExecuteScriptIsAbortedWhenWebViewSourceIsInvalid() {
@@ skipping 1805 matching lines @@
        testRendererNavigationRedirectWhileUnattached,
   'testBlobURL': testBlobURL
 };
 
 onload = function() {
   chrome.test.getConfig(function(config) {
     embedder.setUp_(config);
     chrome.test.sendMessage("Launched");
   });
 };