MD Settings People: Fix ChromeOS Change Picture Profile Icon tooltip

chrome/browser/resources/settings/people_page/change_picture.js

 // Copyright 2015 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.
 
 /**
  * Contains the possible types of Change Picture selections.
  * @enum {string}
  */
 var ChangePictureSelectionTypes = {
   CAMERA: 'camera',
@@ skipping 181 matching lines @@
   },
 
   /**
    * Handler for the 'profile-image-changed' event.
    * @param {string} imageUrl
    * @param {boolean} selected
    * @private
    */
   receiveProfileImage_: function(imageUrl, selected) {
     this.profileImageUrl_ = imageUrl;
-    this.$.profileImage.alt = this.i18n('profilePhoto');
+    this.$.profileImage.title = this.i18n('profilePhoto');
 
     if (!selected)
       return;
 
     this.fallbackImage_ = this.$.profileImage;
 
     // If user is currently taking a photo, do not steal the focus.
     if (!this.selectedItem_ ||
         this.selectedItem_.dataset.type != ChangePictureSelectionTypes.CAMERA) {
       this.$.selector.select(this.$.selector.indexOf(this.$.profileImage));
@@ skipping 221 matching lines @@
    */
   getAuthorWebsite_: function(selectedItem, defaultImages) {
     if (!this.isAuthorCreditShown_(selectedItem))
       return '';
 
     assert(selectedItem.dataset.defaultImageIndex !== null &&
            selectedItem.dataset.defaultImageIndex < defaultImages.length);
     return defaultImages[selectedItem.dataset.defaultImageIndex].website;
   },
 });