Refactoring recently closed tab filtering

chrome/chrome_browser.gypi

 # Copyright (c) 2011 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',
       'dependencies': [
@@ skipping 1986 matching lines @@
         'browser/sessions/session_id.cc',
         'browser/sessions/session_id.h',
         'browser/sessions/session_restore.cc',
         'browser/sessions/session_restore.h',
         'browser/sessions/session_service.cc',
         'browser/sessions/session_service.h',
         'browser/sessions/session_service_factory.cc',
         'browser/sessions/session_service_factory.h',
         'browser/sessions/session_types.cc',
         'browser/sessions/session_types.h',
+        'browser/sessions/session_utils.cc',
+        'browser/sessions/session_utils.h',
         'browser/sessions/tab_restore_service.cc',
         'browser/sessions/tab_restore_service.h',
         'browser/sessions/tab_restore_service_factory.cc',
         'browser/sessions/tab_restore_service_factory.h',
         'browser/shell_integration.cc',
         'browser/shell_integration.h',
         'browser/shell_integration_linux.cc',
         'browser/shell_integration_mac.mm',
         'browser/shell_integration_win.cc',
         'browser/sidebar/sidebar_container.cc',
@@ skipping 3024 matching lines @@
               # weak imports in dependents, who still must #include
               # closure_blocks_leopard_compat.h to get weak imports.
               'type': 'none',
             }],
           ],
         },
       ],
     }],
   ],
 }