Move the ViewType enum to extensions\common.

chrome/chrome_browser.gypi

 # Copyright 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',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 2058 matching lines @@
         'browser/value_store/leveldb_value_store.cc',
         'browser/value_store/leveldb_value_store.h',
         'browser/value_store/testing_value_store.cc',
         'browser/value_store/testing_value_store.h',
         'browser/value_store/value_store_change.cc',
         'browser/value_store/value_store_change.h',
         'browser/value_store/value_store_frontend.cc',
         'browser/value_store/value_store_frontend.h',
         'browser/value_store/value_store.cc',
         'browser/value_store/value_store.h',
-        'browser/view_type_utils.cc',
-        'browser/view_type_utils.h',
         'browser/web_applications/web_app.cc',
         'browser/web_applications/web_app.h',
         'browser/web_applications/web_app_android.cc',
         'browser/web_applications/web_app_linux.cc',
         'browser/web_applications/web_app_mac.h',
         'browser/web_applications/web_app_mac.mm',
         'browser/web_applications/web_app_win.cc',
         'browser/web_resource/json_asynchronous_unpacker.cc',
         'browser/web_resource/json_asynchronous_unpacker.h',
         'browser/web_resource/notification_promo.cc',
@@ skipping 1038 matching lines @@
             'package_name': 'org/chromium/chrome/browser/ui/toolbar',
             'template_deps': ['browser/ui/toolbar/toolbar_model_security_level_list.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }