Add link to Hangouts Remote Desktop in the It2Me section of the remoting app.

remoting/webapp/butter_bar.js

+// Copyright 2013 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.
+
+/**
+ * @fileoverview
+ * ButterBar class that is used to show the butter bar with various
+ * notifications.
+ */
+
+'use strict';
+
+/** @suppress {duplicate} */
+var remoting = remoting || {};
+
+/**
+ * @constructor
+ */
+remoting.ButterBar = function() {
+  this.storageKey_ = '';
+
+  /** @type{remoting.ButterBar} */
+  var that = this;
+
+  /** @param {Object} syncValues */
+  var onSyncDataLoaded = function(syncValues) {
+    chrome.storage.local.get(
+        remoting.kIT2MeVisitedStorageKey,
+        that.onStateLoaded_.bind(that, syncValues));
+  };
+
+  chrome.storage.sync.get(
+      [remoting.ButterBar.kSurveyStorageKey_,
+       remoting.ButterBar.kHangoutsStorageKey_],
+      onSyncDataLoaded);
+}
+
+/**
+ * Shows butter bar with the specified |message| and updates |storageKey| after
+ * the bar is dismissed.
+ *
+ * @param {string} messageId
+ * @param {string} substitutions
+ * @param {string} storageKey
+ * @private
+ */
+remoting.ButterBar.prototype.show_ =
+    function(messageId, substitutions, storageKey) {
+  this.storageKey_ = storageKey;
+
+  var messageElement = document.getElementById(remoting.ButterBar.kMessageId_);
+  l10n.localizeElementFromTag(messageElement, messageId, substitutions, true);
+  var acceptLink =
+      /** @type{Element} */ messageElement.getElementsByTagName('a')[0];
+  acceptLink.addEventListener(
+      'click', this.dismiss.bind(this, true), false);
+
+  document.getElementById(remoting.ButterBar.kDismissId_).addEventListener(
+      'click', this.dismiss.bind(this, false), false);
+
+  document.getElementById(remoting.ButterBar.kId_).hidden = false;
+}
+
+/**
+  * @param {Object} syncValues
+  * @param {Object} localValues
+  * @private
+  */
+remoting.ButterBar.prototype.onStateLoaded_ =
+    function(syncValues, localValues) {
+  /** @type {boolean} */
+  var surveyDismissed = !!syncValues[remoting.ButterBar.kSurveyStorageKey_];
+  /** @type {boolean} */
+  var hangoutsDismissed =
+      !!syncValues[remoting.ButterBar.kHangoutsStorageKey_];
+  /** @type {boolean} */
+  var it2meExpanded = !!localValues[remoting.kIT2MeVisitedStorageKey];
+
+  var showSurvey = !surveyDismissed;
+  var showHangouts = it2meExpanded && !hangoutsDismissed;
+
+  // If both messages can be shown choose only one randomly.
+  if (showSurvey && showHangouts) {
+    if (Math.random() > 0.5) {
+      showSurvey = false;
+    } else {
+      showHangouts = false;
+    }
+  }
+
+  if (showSurvey) {
+    this.show_(/*i18n-content*/'SURVEY_INVITATION',
+               ['<a href="http://goo.gl/njH2q" target="_blank">', '</a>'],
+               remoting.ButterBar.kSurveyStorageKey_);
+  } else if (showHangouts) {
+    this.show_(/*i18n-content*/'HANGOUTS_INVITATION',
+               ['<a id="hangouts-accept" ' +
+                'href="https://plus.google.com/hangouts/_?gid=818572447316">',
+                '</a>'],
+               remoting.ButterBar.kHangoutsStorageKey_);
+  }
+};
+
+/** @const @private */
+remoting.ButterBar.kId_ = 'butter-bar';
+
+/** @const @private */
+remoting.ButterBar.kMessageId_ = 'butter-bar-message';
+/** @const @private */
+remoting.ButterBar.kDismissId_ = 'butter-bar-dismiss';
+
+/** @const @private */
+remoting.ButterBar.kSurveyStorageKey_ = 'feedback-survey-dismissed';
+/** @const @private */
+remoting.ButterBar.kHangoutsStorageKey_ = 'hangouts-notice-dismissed';
+
+/**
+ * Hide the butter bar request and record some basic information about the
+ * current state of the world in synced storage. This may be useful in the
+ * future if we want to show the request again. At the moment, the data itself
+ * is ignored; only its presence or absence is important.
+ *
+ * @param {boolean} accepted True if the user clicked the "accept" link;
+ *     false if they clicked the close icon.
+ */
+remoting.ButterBar.prototype.dismiss = function(accepted) {
+  var value = {};
+  value[this.storageKey_] = {
+    optIn: accepted,
+    date: new Date(),
+    version: chrome.runtime.getManifest().version
+  };
+  chrome.storage.sync.set(value);
+
+  document.getElementById(remoting.ButterBar.kId_).hidden = true;
+};