This patch enables "mailto" links in WebViews.

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 23 matching lines @@
   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';
+  embedder.mailtoTestURL = embedder.baseGuestURL +
+      '/extensions/platform_apps/web_view/shim/mailto.html';
 };
 
 window.runTest = function(testName) {
   if (!embedder.test.testList[testName]) {
     console.log('Incorrect testName: ' + testName);
     embedder.test.fail();
     return;
   }
 
   // Run the test.
@@ skipping 2672 matching lines @@
   var webview = document.createElement('webview');
   var pdfUrl = 'test.pdf';
   // partition 'foobar' has access to local resource |pdfUrl|.
   webview.partition = 'foobar';
   webview.onloadstop = embedder.test.succeed;
   webview.onloadabort = embedder.test.fail;
   webview.setAttribute('src', pdfUrl);
   document.body.appendChild(webview);
 }
 
+// This test verifies that mailto links are enabled.
+function testMailtoLink() {
+  var webview = new WebView();
+  webview.src = embedder.mailtoTestURL;
+
+  webview.onloadstop = function() {
+    webview.onloadabort = function(e) {
+      // The mailto link should not trigger a loadabort.
+      if (e.url.substring(0, 7) == 'mailto:') {
+        embedder.test.fail();
+      }
+    };
+    webview.onloadstop = function() {
+      // If mailto links are disabled, then |webview.src| will now be
+      // 'about:blank'.
+      embedder.test.assertFalse(webview.src == 'about:blank');
+      embedder.test.succeed();
+    };
+    webview.executeScript({code:'document.getElementById("mailto").click()'});
+  };
+
+  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 81 matching lines @@
   'testLoadDataAPI': testLoadDataAPI,
   'testResizeEvents': testResizeEvents,
   'testPerOriginZoomMode': testPerOriginZoomMode,
   'testPerViewZoomMode': testPerViewZoomMode,
   'testDisabledZoomMode': testDisabledZoomMode,
   'testZoomBeforeNavigation': testZoomBeforeNavigation,
   'testPlugin': testPlugin,
   'testGarbageCollect': testGarbageCollect,
   'testCloseNewWindowCleanup': testCloseNewWindowCleanup,
   'testFocusWhileFocused': testFocusWhileFocused,
-  'testPDFInWebview': testPDFInWebview
+  'testPDFInWebview': testPDFInWebview,
+  'testMailtoLink': testMailtoLink
 };
 
 onload = function() {
   chrome.test.getConfig(function(config) {
     embedder.setUp_(config);
     chrome.test.sendMessage("Launched");
   });
 };