arc: Add Goolge Privacy Policy link to OptIn UI.

chrome/browser/resources/chromeos/arc_support/background.js

 // Copyright 2016 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.
 
 /**
  * UI Pages. Note the order must be in sync with the ArcAuthService::UIPage
  * enum.
  * @type {Array<string>}
  */
 var UI_PAGES = ['none',
@@ skipping 426 matching lines @@
  * @param {string} url Target URL to open in overlay dialog.
  */
 function showURLOverlay(url) {
   var doc = appWindow.contentWindow.document;
   var overlayWebview = doc.getElementById('overlay-url');
   overlayWebview.src = url;
   showOverlay('overlay-url');
 }
 
 /**
+ * Shows Google Privacy Policy in overlay dialog. Policy link is detected from
+ * the content of terms view.
+ */
+function showPrivacyPolicyOverlay() {
+  termsView.executeScript({code: 'getPrivacyPolicyLink();'}, function(results) {
+    if (results && results.length == 1 && typeof results[0] == 'string') {
+      showURLOverlay(results[0]);
+    } else {
+      showURLOverlay('https://www.google.com/policies/privacy/');
+    }
+  });
+}
+
+/**
  * Hides overlay dialog.
  */
 function hideOverlay() {
   var doc = appWindow.contentWindow.document;
   var overlayContainer = doc.getElementById('overlay-container');
   overlayContainer.hidden = true;
 }
 
 /**
  * Shows requested page.
@@ skipping 201 matching lines @@
     var onSendFeedback = function() {
       sendNativeMessage('onSendFeedbackClicked');
     };
 
     doc.getElementById('button-agree').addEventListener('click', onAgree);
     doc.getElementById('button-cancel').addEventListener('click', onCancel);
     doc.getElementById('button-retry').addEventListener('click', onRetry);
     doc.getElementById('button-send-feedback')
         .addEventListener('click', onSendFeedback);
     doc.getElementById('overlay-close').addEventListener('click', hideOverlay);
+    doc.getElementById('privacy-policy-link').addEventListener(
+        'click', showPrivacyPolicyOverlay);
 
     var overlay = doc.getElementById('overlay-container');
     appWindow.contentWindow.cr.ui.overlay.setupOverlay(overlay);
     appWindow.contentWindow.cr.ui.overlay.globalInitialization();
     overlay.addEventListener('cancelOverlay', hideOverlay);
 
     connectPort();
   };
 
   var onWindowCreated = function(createdWindow) {
@@ skipping 25 matching lines @@
       type: 'chrome',
       color: '#ffffff'
     },
     'innerBounds': {
       'width': INNER_WIDTH,
       'height': INNER_HEIGHT
     }
   };
   chrome.app.window.create('main.html', options, onWindowCreated);
 });