Add WebView browser test for MediaStreamTrack.getSources and CheckMediaAccessPermisson.

chrome/test/data/extensions/platform_apps/web_view/media_access/check/embedder.js

Index: chrome/test/data/extensions/platform_apps/web_view/media_access/check/embedder.js
diff --git a/chrome/test/data/extensions/platform_apps/web_view/media_access/check/embedder.js b/chrome/test/data/extensions/platform_apps/web_view/media_access/check/embedder.js
new file mode 100644
index 0000000000000000000000000000000000000000..aea1c2157122bb80ab1760682cf5fdf5c95b76c4
--- /dev/null
+++ b/chrome/test/data/extensions/platform_apps/web_view/media_access/check/embedder.js
@@ -0,0 +1,93 @@
+// 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.tests = {};
+embedder.baseGuestURL = '';
+embedder.guestURL = '';
+
+// Sends a message to WebViewTest denoting it is done and test
+// has failed.
+embedder.failTest = function(msg) {
+  window.console.log('test failure, reason: ' + msg);
+  chrome.test.sendMessage('TEST_FAILED');
+};
+
+// Sends a message to WebViewTest denoting it is done and test
+// has succeeded.
+embedder.maybePassTest = function() {
+  window.console.log('test passed');
+  chrome.test.sendMessage('TEST_PASSED');
+};
+
+/** @private */
+embedder.setUpGuest_ = function() {
+  document.querySelector('#webview-tag-container').innerHTML =
+      '<webview style="width: 100px; height: 100px;"' +
+      ' src="' + embedder.guestURL + '"' +
+      '></webview>';
+  var webview = document.querySelector('webview');
+  if (!webview) {
+    embedder.failTest('No <webview> element created');
+    return null;
+  }
+  return webview;
+};
+
+/** @private */
+embedder.setUpLoadStop_ = function(webview) {
+  var onWebViewLoadStop = function(e) {
+    window.console.log('onWebViewLoadStop');
+
+    // Send post message to <webview> when it's ready to receive them.
+    // This will make the guest start issueing media request. We do not
+    // worry about the Javascript outcome. MockWebContestsDelegate in
+    // WebViewTest will take care of that.
+    webview.contentWindow.postMessage(
+        JSON.stringify(['get-sources-permission']), '*');
+  };
+  webview.addEventListener('loadstop', onWebViewLoadStop);
+};
+
+// The test loads a guest which requests media sources, which will in turn check
+// for media access permission.
+//
+// Note that this is a manually run test, not using chrome.test.runTests.
+// This is because we want to wait for MockWebContestsDelegate to catch the
+// media access check and not actually do a check.
+
+// Entry point for test, called by WebViewTest.
+function startCheckTest(testName) {
+  chrome.test.getConfig(function(config) {
+    embedder.baseGuestURL = 'http://localhost:' + config.testServer.port;
+    embedder.guestURL = embedder.baseGuestURL +
+        '/extensions/platform_apps/web_view/media_access' +
+        '/media_check_guest.html';
+    chrome.test.log('Guest url is: ' + embedder.guestURL);
+
+    var webview = embedder.setUpGuest_();
+    if (!webview) {
+      return;
+    }
+
+    embedder.setUpLoadStop_(webview);
+
+    webview.addEventListener('consolemessage', function(e) {
+      window.console.log(e.message);
+    });
+
+    window.addEventListener('message', function(e) {
+      var data = JSON.parse(e.data);
+      if (data[0] == 'got-sources') {
+        embedder.maybePassTest();
+      } else {
+        window.console.log('Unexpected message: ' + e.message);
+      }
+    });
+  });
+}
+
+onload = function() {
+  chrome.test.sendMessage('Launched');
+};