mac: Delete more 10.5-only code

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 2876 matching lines @@
         'browser/ui/cocoa/notifications/balloon_view.h',
         'browser/ui/cocoa/notifications/balloon_view.mm',
         'browser/ui/cocoa/notifications/balloon_view_bridge.h',
         'browser/ui/cocoa/notifications/balloon_view_bridge.mm',
         'browser/ui/cocoa/notifications/balloon_view_host_mac.h',
         'browser/ui/cocoa/notifications/balloon_view_host_mac.mm',
         'browser/ui/cocoa/nsmenuitem_additions.h',
         'browser/ui/cocoa/nsmenuitem_additions.mm',
         'browser/ui/cocoa/nsview_additions.h',
         'browser/ui/cocoa/nsview_additions.mm',
-        'browser/ui/cocoa/obsolete_os.cc',
-        'browser/ui/cocoa/obsolete_os.h',
         'browser/ui/cocoa/omnibox/omnibox_popup_view_mac.h',
         'browser/ui/cocoa/omnibox/omnibox_popup_view_mac.mm',
         'browser/ui/cocoa/omnibox/omnibox_view_mac.h',
         'browser/ui/cocoa/omnibox/omnibox_view_mac.mm',
         'browser/ui/cocoa/one_click_signin_bubble_controller.h',
         'browser/ui/cocoa/one_click_signin_bubble_controller.mm',
         'browser/ui/cocoa/page_info_bubble_controller.h',
         'browser/ui/cocoa/page_info_bubble_controller.mm',
         'browser/ui/cocoa/presentation_mode_controller.h',
         'browser/ui/cocoa/presentation_mode_controller.mm',
@@ skipping 543 matching lines @@
         'browser/ui/startup/autolaunch_prompt_win.cc',
         'browser/ui/startup/autolaunch_prompt.h',
         'browser/ui/startup/bad_flags_prompt.cc',
         'browser/ui/startup/bad_flags_prompt.h',
         'browser/ui/startup/default_browser_prompt.cc',
         'browser/ui/startup/default_browser_prompt.h',
         'browser/ui/startup/default_browser_prompt_win.cc',
         'browser/ui/startup/obsolete_os_prompt.cc',
         'browser/ui/startup/obsolete_os_prompt.h',
         'browser/ui/startup/obsolete_os_prompt_gtk.cc',
-        'browser/ui/startup/obsolete_os_prompt_mac.cc',
         'browser/ui/startup/session_crashed_prompt.cc',
         'browser/ui/startup/session_crashed_prompt.h',
         'browser/ui/startup/startup_browser_creator.cc',
         'browser/ui/startup/startup_browser_creator.h',
         'browser/ui/startup/startup_browser_creator_impl.cc',
         'browser/ui/startup/startup_browser_creator_impl.h',
         'browser/ui/startup/startup_browser_creator_win.cc',
         'browser/ui/startup/startup_browser_creator_win.h',
         'browser/ui/startup/startup_tab.cc',
         'browser/ui/startup/startup_tab.h',
@@ skipping 2069 matching lines @@
           'includes': [ '../build/jni_generator.gypi' ],
           'dependencies': [
             'android_jar_jni_headers',
           ],
         },
       ],
      },
     ],
   ],
 }