Move gtk-specific browser main parts stuff to its own file.

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.
 
 {
   'variables': {
     # There are two sections of sources:
     # * "Platform"-based sources (OS, toolkit, etc.)
     # * Feature/directory-based sources (e.g., history, printing)
 
@@ skipping 640 matching lines @@
       'browser/ui/views/touch_uma/touch_uma.cc',
     ],
     # Cross-platform aura sources.
     'chrome_browser_ui_aura_sources': [
       'browser/ui/aura/accessibility/automation_manager_aura.cc',
       'browser/ui/aura/accessibility/automation_manager_aura.h',
       'browser/ui/aura/accessibility/ax_root_obj_wrapper.cc',
       'browser/ui/aura/accessibility/ax_root_obj_wrapper.h',
       'browser/ui/aura/accessibility/ax_tree_source_aura.cc',
       'browser/ui/aura/accessibility/ax_tree_source_aura.h',
-      'browser/ui/aura/chrome_browser_main_extra_parts_aura.cc',
-      'browser/ui/aura/chrome_browser_main_extra_parts_aura.h',
       'browser/ui/aura/native_window_tracker_aura.cc',
       'browser/ui/aura/native_window_tracker_aura.h',
       'browser/ui/aura/tab_contents/web_drag_bookmark_handler_aura.cc',
       'browser/ui/aura/tab_contents/web_drag_bookmark_handler_aura.h',
       'browser/ui/views/crypto_module_password_dialog_view.cc',
       'browser/ui/views/crypto_module_password_dialog_view.h',
       'browser/ui/views/desktop_media_picker_views.cc',
       'browser/ui/views/desktop_media_picker_views.h',
       'browser/ui/views/link_disambiguation/link_disambiguation_popup.cc',
       'browser/ui/views/link_disambiguation/link_disambiguation_popup.h',
@@ skipping 2673 matching lines @@
           ],
           'sources': [
             '<@(chrome_browser_ui_non_mobile_sources)',
             '<@(chrome_browser_ui_omnibox_non_mobile_sources)',
           ],
         }],
       ],
     },
   ],
 }