Fix crash when a webview tries to load a plugin resource.

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 14 matching lines @@
   embedder.noReferrerGuestURL = embedder.baseGuestURL +
       '/extensions/platform_apps/web_view/shim/guest_noreferrer.html';
   embedder.detectUserAgentURL = embedder.baseGuestURL + '/detect-user-agent';
   embedder.redirectGuestURL = embedder.baseGuestURL + '/server-redirect';
   embedder.redirectGuestURLDest = embedder.baseGuestURL +
       '/extensions/platform_apps/web_view/shim/guest_redirect.html';
   embedder.closeSocketURL = embedder.baseGuestURL + '/close-socket';
   embedder.testImageBaseURL = embedder.baseGuestURL +
       '/extensions/platform_apps/web_view/shim/';
   embedder.virtualURL = 'http://virtualurl/';
+  embedder.pluginURL = embedder.baseGuestURL +
+      '/extensions/platform_apps/web_view/shim/embed.html';
 };
 
 window.runTest = function(testName) {
   if (!embedder.test.testList[testName]) {
     console.log('Incorrect testName: ' + testName);
     embedder.test.fail();
     return;
   }
 
   // Run the test.
@@ skipping 2153 matching lines @@
             embedder.test.succeed();
           });
         });
       });
     });
   });
 
   document.body.appendChild(webview);
 }
 
+function testPlugin() {
+  var webview = document.createElement('webview');
+  webview.setAttribute('src', embedder.pluginURL);
+  webview.addEventListener('loadstop', function(e) {
+    // Not crashing means success.
+    embedder.test.succeed();
+  });
+  document.body.appendChild(webview);
+}
+
 embedder.test.testList = {
   'testAllowTransparencyAttribute': testAllowTransparencyAttribute,
   'testAutosizeHeight': testAutosizeHeight,
   'testAutosizeAfterNavigation': testAutosizeAfterNavigation,
   'testAutosizeBeforeNavigation': testAutosizeBeforeNavigation,
   'testAutosizeRemoveAttributes': testAutosizeRemoveAttributes,
   'testAutosizeWithPartialAttributes': testAutosizeWithPartialAttributes,
   'testAPIMethodExistence': testAPIMethodExistence,
   'testChromeExtensionURL': testChromeExtensionURL,
   'testChromeExtensionRelativePath': testChromeExtensionRelativePath,
@@ skipping 62 matching lines @@
   'testPostMessageCommChannel': testPostMessageCommChannel,
   'testScreenshotCapture' : testScreenshotCapture,
   'testZoomAPI' : testZoomAPI,
   'testFindAPI': testFindAPI,
   'testFindAPI_findupdate': testFindAPI,
   'testLoadDataAPI': testLoadDataAPI,
   'testResizeEvents': testResizeEvents,
   'testPerOriginZoomMode': testPerOriginZoomMode,
   'testPerViewZoomMode': testPerViewZoomMode,
   'testDisabledZoomMode': testDisabledZoomMode,
+  'testPlugin': testPlugin,
 };
 
 onload = function() {
   chrome.test.getConfig(function(config) {
     embedder.setUp_(config);
     chrome.test.sendMessage("Launched");
   });
 };