Move command handling and updating off Browser and onto a helper object.

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 2361 matching lines @@
         'browser/ui/blocked_content/blocked_content_tab_helper_delegate.h',
         'browser/ui/bookmarks/bookmark_bar.h',
         'browser/ui/bookmarks/bookmark_tab_helper.cc',
         'browser/ui/bookmarks/bookmark_tab_helper.h',
         'browser/ui/bookmarks/bookmark_tab_helper_delegate.cc',
         'browser/ui/bookmarks/bookmark_tab_helper_delegate.h',
         'browser/ui/browser.cc',
         'browser/ui/browser.h',
         'browser/ui/browser_commands.cc',
         'browser/ui/browser_commands.h',
+        'browser/ui/browser_command_controller.cc',
+        'browser/ui/browser_command_controller.h',
         'browser/ui/browser_content_setting_bubble_model_delegate.cc',
         'browser/ui/browser_content_setting_bubble_model_delegate.h',
         'browser/ui/browser_dialogs.h',
         'browser/ui/browser_finder.cc',
         'browser/ui/browser_finder.h',
         'browser/ui/browser_list.cc',
         'browser/ui/browser_list.h',
         'browser/ui/browser_mac.cc',
         'browser/ui/browser_mac.h',
         'browser/ui/browser_navigator.cc',
@@ skipping 2923 matching lines @@
         'browser/metrics/proto/study.proto',
       ],
       'variables': {
         'proto_in_dir': 'browser/metrics/proto',
         'proto_out_dir': 'chrome/browser/metrics/proto',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }