[Sync] Add option to remove device from "Other devices" on desktop

chrome/browser/resources/history/other_devices.js

 // Copyright (c) 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 The section of the history page that shows tabs from sessions
                  on other devices.
  */
 
 ///////////////////////////////////////////////////////////////////////////////
@@ skipping 49 matching lines @@
 DeviceContextMenuController.prototype.initialize = function() {
   var menu = new cr.ui.Menu;
   cr.ui.decorate(menu, cr.ui.Menu);
   this.menu = menu;
   this.collapseItem_ = this.appendMenuItem_('collapseSessionMenuItemText');
   this.collapseItem_.addEventListener('activate',
                                       this.onCollapseOrExpand_.bind(this));
   this.expandItem_ = this.appendMenuItem_('expandSessionMenuItemText');
   this.expandItem_.addEventListener('activate',
                                     this.onCollapseOrExpand_.bind(this));
-  this.openAllItem_ = this.appendMenuItem_('restoreSessionMenuItemText');
-  this.openAllItem_.addEventListener('activate',
-                                     this.onOpenAll_.bind(this));
+  var openAllItem = this.appendMenuItem_('restoreSessionMenuItemText');
+  openAllItem.addEventListener('activate', this.onOpenAll_.bind(this));
+  var deleteItem = this.appendMenuItem_('deleteSessionMenuItemText');
+  deleteItem.addEventListener('activate', this.onDeleteSession_.bind(this));
 };
 
 /**
  * Set the session data for the session the context menu was invoked on.
  * This should never be called when the menu is visible.
  * @param {Object} session The model object for the session.
  */
 DeviceContextMenuController.prototype.setSession = function(session) {
   this.session_ = session;
   this.updateMenuItems_();
@@ skipping 37 matching lines @@
  * Handler for the 'Open all' menu item.
  * @param {Event} e The activation event.
  * @private
  */
 DeviceContextMenuController.prototype.onOpenAll_ = function(e) {
   chrome.send('openForeignSession', [this.session_.tag]);
   recordUmaEvent_(HISTOGRAM_EVENT.OPEN_ALL);
 };
 
 /**
+ * Handler for the 'Hide for now' menu item.
+ * @param {Event} e The activation event.
+ * @private
+ */
+DeviceContextMenuController.prototype.onDeleteSession_ = function(e) {
+  chrome.send('deleteForeignSession', [this.session_.tag]);
+  recordUmaEvent_(HISTOGRAM_EVENT.HIDE_FOR_NOW);
+};
+
+/**
  * Set the visibility of the Expand/Collapse menu items based on the state
  * of the session that this menu is currently associated with.
  * @private
  */
 DeviceContextMenuController.prototype.updateMenuItems_ = function() {
   this.collapseItem_.hidden = this.session_.collapsed;
   this.expandItem_.hidden = !this.session_.collapsed;
   this.menu.selectedItem = this.menu.querySelector(':not([hidden])');
 };
 
@@ skipping 427 matching lines @@
     devicesView.setSearchText($('search-field').value);
   };
   $('search-field').addEventListener('search', doSearch);
   $('search-button').addEventListener('click', doSearch);
 
   chrome.send('otherDevicesInitialized');
 }
 
 // Add handlers to HTML elements.
 document.addEventListener('DOMContentLoaded', load);