Reland r247589:<webview>: Fix text selection features in mac.

chrome/test/data/extensions/platform_apps/web_view/text_selection/embedder.js

Index: chrome/test/data/extensions/platform_apps/web_view/text_selection/embedder.js
diff --git a/chrome/test/data/extensions/platform_apps/web_view/text_selection/embedder.js b/chrome/test/data/extensions/platform_apps/web_view/text_selection/embedder.js
new file mode 100644
index 0000000000000000000000000000000000000000..c09ed2a4e6909254c88e3e9b44076efdc373f636
--- /dev/null
+++ b/chrome/test/data/extensions/platform_apps/web_view/text_selection/embedder.js
@@ -0,0 +1,55 @@
+// Copyright 2014 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 embedder = {};
+embedder.baseGuestURL = '';
+embedder.guestURL = '';
+
+var LOG = function(msg) { window.console.log(msg); };
+
+embedder.setUp = function(config) {
+  embedder.baseGuestURL = 'http://localhost:' + config.testServer.port;
+  embedder.guestURL = embedder.baseGuestURL +
+      '/extensions/platform_apps/web_view/text_selection' +
+      '/guest.html';
+  LOG('Guest url is: ' + embedder.guestURL);
+};
+
+/** @private */
+embedder.setUpGuest_ = function() {
+  document.querySelector('#webview-tag-container').innerHTML =
+      '<webview style="width: 100px; height: 100px;"></webview>';
+  var webview = document.querySelector('webview');
+  if (!webview) {
+    chrome.test.fail('No <webview> element created');
+  }
+  return webview;
+};
+
+// Tests begin.
+function testSelection(webview) {
+  var onLoadStop = function(e) {
+    LOG('webview.onLoadStop');
+    chrome.test.sendMessage('connected');
+  };
+  webview.addEventListener('loadstop', onLoadStop);
+  webview.addEventListener('consolemessage', function(e) {
+    if (e.message == 'GUEST_CONTEXTMENU') {
+      chrome.test.sendMessage('MSG_CONTEXTMENU');
+    }
+  });
+  webview.src = embedder.guestURL;
+}
+
+embedder.startTests = function startTests() {
+   var webview = embedder.setUpGuest_();
+   testSelection(webview);
+};
+
+onload = function() {
+  chrome.test.getConfig(function(config) {
+    embedder.setUp(config);
+    embedder.startTests();
+  });
+};