Revert of Browser tests for the ChromeOS chromecast system tray item.

chrome/test/data/extensions/tray_cast/background.js

 // Copyright (c) 2015 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 backgroundSetup = {}
 
 // If all required activity information is available, then this will return an
 // activity structure; otherwise, it will return null. This lets us
 // unconditionally assign to the 'activity' field in a JSON object.
 tryCreateActivity_ = function(id, title, tabId) {
   if (id === undefined || title === undefined || tabId === undefined)
     return null;
 
   return {
-    'id': id,
-    'title': title,
-    'tabId': tabId
+    "id": id,
+    "title": title,
+    "tabId": tabId
   };
 }
 
 var receiversActivities = [];
-var sendDevices = function() {
-  chrome.cast.devicesPrivate.updateDevices(receiversActivities);
-}
-chrome.cast.devicesPrivate.updateDevicesRequested.addListener(sendDevices);
-
 // Add a new receiver. |activityTitle| and |activityTabId| are optional
 // parameters.
-var addReceiver = function(id, receiverName, activityTitle, activityTabId) {
+addReceiver = function(id, receiverName, activityTitle, activityTabId) {
   receiversActivities.push({
-    'receiver': {
-      'id': id,
-      'name': receiverName
-    },
-    'activity': tryCreateActivity_(id, activityTitle, activityTabId)
+    "activity": tryCreateActivity_(id, activityTitle, activityTabId),
+    "receiver": {
+      "id": id,
+      "name": receiverName
+    }
   });
+}
+// Required API method.
+getMirrorCapableReceiversAndActivities = function() {
+  // For all of the API methods, we verify that |this| points to
+  // backgroundSetup. In the actual extension, the API methods are
+  // also free-standing but they are really class methods on backgroundSetup.
+  if (this !== backgroundSetup)
+    throw 'this !== backgroundSetup';
 
-  sendDevices();
+  return receiversActivities;
 }
 
+var stopMirroringReason = "";
 var stopMirroringCalled = false;
-chrome.cast.devicesPrivate.stopCast.addListener(function(reason) {
-  if (reason !== 'user-stop')
-    throw 'expected reason to be "user-stop"';
+wasStopMirroringCalledWithUserStop = function() {
+  return stopMirroringCalled && stopMirroringReason == 'user-stop';
+}
+// Required API method.
+stopMirroring = function(reason) {
+  if (this !== backgroundSetup)
+    throw 'this !== backgroundSetup';
+
+  stopMirroringReason = reason;
+  stopMirroringCalled = true;
 
   var foundActivity = false;
   for (item of receiversActivities) {
     if (item.activity != null) {
       item.activity = null;
       foundActivity = true;
     }
   }
   if (foundActivity === false)
     throw 'stopMirroring called when there was nothing being mirrored'
+}
 
-  stopMirroringCalled = true;
-  sendDevices();
-});
+var launchTabId = 1;
+var launchTabTitle = "Fake Cast";
+var launchDesktopMirroringReceiverId = "";
+getLaunchDesktopMirroringReceiverId = function() {
+  return launchDesktopMirroringReceiverId;
+}
+// Required API method.
+launchDesktopMirroring = function(receiverId) {
+  if (this !== backgroundSetup)
+    throw 'this !== backgroundSetup';
 
-
-var launchDesktopMirroringReceiverId = '';
-chrome.cast.devicesPrivate.startCast.addListener(function(receiverId) {
   launchDesktopMirroringReceiverId = receiverId;
 
-  var tabTitle = 'Tab Title';
-  var tabId = 1;
-
   for (item of receiversActivities) {
     if (item.receiver.id == receiverId) {
-      item.activity = tryCreateActivity_(receiverId, tabTitle, tabId);
+      item.activity =
+        tryCreateActivity_(receiverId, launchTabId, launchTabTitle);
       break;
     }
   }
-
-  sendDevices();
-});
+}