[extensions] tool tip for trash icon

chrome/browser/resources/extensions/extension_list.js

 // Copyright (c) 2012 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.
 
 cr.define('options', function() {
   'use strict';
 
   /**
    * A lookup helper function to find the first node that has an id (starting
    * at |node| and going up the parent chain).
@@ skipping 182 matching lines @@
         var terminated_reload = node.querySelector('.terminated-reload-link');
         terminated_reload.hidden = false;
         terminated_reload.addEventListener('click', function(e) {
           chrome.send('extensionSettingsReload', [extension.id]);
         });
       }
 
       // 'Remove' button.
       var trashTemplate = $('template-collection').querySelector('.trash');
       var trash = trashTemplate.cloneNode(true);
+      trash.title = templateData.extensionUninstall;
       trash.addEventListener('click', function(e) {
         chrome.send('extensionSettingsUninstall', [extension.id]);
       });
       node.querySelector('.enable-controls').appendChild(trash);
 
       // Developer mode details.
       if (this.data_.developerMode) {
         // First we have the id.
         var idLabel = node.querySelector('.extension-id');
         idLabel.textContent = ' ' + extension.id;
@@ skipping 41 matching lines @@
       }
 
       this.appendChild(node);
     },
   };
 
   return {
     ExtensionsList: ExtensionsList
   };
 });