ntp: add tooltips for all tile types

chrome/browser/resources/ntp4/apps_page.js

 // Copyright (c) 2011 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('ntp4', function() {
   'use strict';
 
   var localStrings = new LocalStrings;
 
   var APP_LAUNCH = {
@@ skipping 180 matching lines @@
       var appImg = this.ownerDocument.createElement('img');
       this.appImg_ = appImg;
       this.setIcon();
       appImgContainer.appendChild(appImg);
 
       if (this.useSmallIcon_) {
         var imgDiv = this.ownerDocument.createElement('div');
         imgDiv.className = 'app-icon-div';
         imgDiv.appendChild(appImgContainer);
         imgDiv.addEventListener('click', this.onClick_.bind(this));
+        imgDiv.title = this.appData_.name;
         this.imgDiv_ = imgDiv;
         appContents.appendChild(imgDiv);
         this.appImgContainer_.style.position = 'absolute';
         this.appImgContainer_.style.bottom = '10px';
         this.appImgContainer_.style.left = '10px';
         var stripeDiv = this.ownerDocument.createElement('div');
         stripeDiv.className = 'color-stripe';
         imgDiv.appendChild(stripeDiv);
 
         chrome.send('getAppIconDominantColor', [this.id]);
       } else {
         appImgContainer.addEventListener('click', this.onClick_.bind(this));
+        appImgContainer.title = this.appData_.name;
         appContents.appendChild(appImgContainer);
       }
 
       var appSpan = this.ownerDocument.createElement('span');
-      appSpan.textContent = this.appData_.name;
+      appSpan.textContent = appSpan.title = this.appData_.name;
       appSpan.addEventListener('click', this.onClick_.bind(this));
       appContents.appendChild(appSpan);
       this.appendChild(appContents);
 
       var notification = this.appData_.notification;
       var hasNotification = typeof notification != 'undefined' &&
                             typeof notification['title'] != 'undefined' &&
                             typeof notification['body'] != 'undefined';
       if (hasNotification)
         this.setupNotification_(notification);
@@ skipping 486 matching lines @@
     appsPrefChangeCallback: appsPrefChangeCallback,
     launchAppAfterEnable: launchAppAfterEnable,
   };
 });
 
 // TODO(estade): update the content handlers to use ntp namespace instead of
 // making these global.
 var appNotificationChanged = ntp4.appNotificationChanged;
 var appsPrefChangeCallback = ntp4.appsPrefChangeCallback;
 var launchAppAfterEnable = ntp4.launchAppAfterEnable;