Newly created profiles should have the grey silhouette as avatar.

chrome/browser/resources/login/user_pod_row.js

 // Copyright 2014 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 User pod row implementation.
  */
 
 cr.define('login', function() {
   /**
@@ skipping 1120 matching lines @@
     /** @override */
     decorate: function() {
       UserPod.prototype.decorate.call(this);
     },
 
     /** @override */
     update: function() {
       // TODO(noms): Use the actual profile avatar for local profiles once the
       // new, non-pixellated avatars are available.
       this.imageElement.src = this.user.emailAddress == '' ?
-          'chrome://theme/IDR_USER_MANAGER_DEFAULT_AVATAR' :
+          'chrome://theme/IDR_PROFILE_AVATAR_26' :
           this.user.userImage;
       this.nameElement.textContent = this.user.displayName;
 
       var isLockedUser = this.user.needsSignin;
       this.signinButtonElement.hidden = true;
       this.lockedIndicatorElement.hidden = !isLockedUser;
       this.passwordElement.hidden = !isLockedUser;
       this.nameElement.hidden = isLockedUser;
 
       UserPod.prototype.updateActionBoxArea.call(this);
@@ skipping 1095 matching lines @@
       if (this.podsWithPendingImages_.length == 0) {
         this.classList.remove('images-loading');
       }
     }
   };
 
   return {
     PodRow: PodRow
   };
 });