[Mac] Implement the avatar menu bubble.

chrome/chrome_dll.gypi

 # 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.
 {
   'target_defaults': {
     'variables': {
       'chrome_dll_target': 0,
     },
     'target_conditions': [
       ['chrome_dll_target==1', {
@@ skipping 208 matching lines @@
                 # from disk image and Keystone promotion (if so enabled).  It
                 # needs to exist as a file on disk and not just something in a
                 # resource bundle because that's the interface that
                 # Authorization Services uses.  Also, Authorization Services
                 # can't deal with .icns files.
                 'app/theme/<(theme_dir_name)/product_logo_32.png',
 
                 'app/framework-Info.plist',
                 'app/nibs/About.xib',
                 'app/nibs/AboutIPC.xib',
+                'app/nibs/AvatarMenuItem.xib',
                 'app/nibs/BookmarkAllTabs.xib',
                 'app/nibs/BookmarkBar.xib',
                 'app/nibs/BookmarkBubble.xib',
                 'app/nibs/BookmarkEditor.xib',
                 'app/nibs/BookmarkNameFolder.xib',
                 'app/nibs/BrowserWindow.xib',
                 'app/nibs/CollectedCookies.xib',
                 'app/nibs/CookieDetailsView.xib',
                 'app/nibs/ContentBlockedCookies.xib',
                 'app/nibs/ContentBlockedImages.xib',
@@ skipping 492 matching lines @@
                   'LinkIncremental': '<(msvs_debug_link_nonincremental)',
                 },
               },
             },
           },
         },  # target chrome_dll
       ],
     }],
   ],
 }