Cleanup webview app_shell_browsertests and add webview media permission tests in app_shell_browsert…

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

 // 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 = {};
+// These variables will be filled in chrome.test.getConfig() below.
 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');
@@ skipping 20 matching lines @@
 };
 
 // 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) {
+function runTest(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';
+    embedder.guestURL = embedder.baseGuestURL + '/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');
+  chrome.test.sendMessage('LAUNCHED');
 };