Removes --enable-stacked-tab-strip flag (Stacked Tabs)

chrome/chrome_browser_ui.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_ui',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 1388 matching lines @@
         'browser/ui/tabs/pinned_tab_codec.cc',
         'browser/ui/tabs/pinned_tab_codec.h',
         'browser/ui/tabs/pinned_tab_service.cc',
         'browser/ui/tabs/pinned_tab_service.h',
         'browser/ui/tabs/pinned_tab_service_factory.cc',
         'browser/ui/tabs/pinned_tab_service_factory.h',
         'browser/ui/tabs/tab_menu_model.cc',
         'browser/ui/tabs/tab_menu_model.h',
         'browser/ui/tabs/tab_resources.cc',
         'browser/ui/tabs/tab_resources.h',
-        'browser/ui/tabs/tab_strip_layout_type.h',
         'browser/ui/tabs/tab_strip_layout_type_prefs.cc',
         'browser/ui/tabs/tab_strip_layout_type_prefs.h',
         'browser/ui/tabs/tab_strip_model.cc',
         'browser/ui/tabs/tab_strip_model.h',
         'browser/ui/tabs/tab_strip_model_delegate.h',
         'browser/ui/tabs/tab_strip_model_observer.cc',
         'browser/ui/tabs/tab_strip_model_observer.h',
         'browser/ui/tabs/tab_strip_model_order_controller.cc',
         'browser/ui/tabs/tab_strip_model_order_controller.h',
         'browser/ui/tabs/tab_strip_model_utils.cc',
@@ skipping 1736 matching lines @@
           ],
           'sources!': [
             'browser/ui/views/session_crashed_bubble_view.cc',
             'browser/ui/views/session_crashed_bubble_view.h',
           ],
         }],
       ],
     },
   ],
 }