Create a common base class for all the webdatas

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 2094 matching lines @@
         'browser/webdata/token_service_table.cc',
         'browser/webdata/token_service_table.h',
         'browser/webdata/web_apps_table.cc',
         'browser/webdata/web_apps_table.h',
         'browser/webdata/web_database_service.cc',
         'browser/webdata/web_database_service.h',
         'browser/webdata/web_data_request_manager.cc',
         'browser/webdata/web_data_request_manager.h',
         'browser/webdata/web_data_service.cc',
         'browser/webdata/web_data_service.h',
+        'browser/webdata/web_data_service_base.cc',
         'browser/webdata/web_data_service_factory.cc',
         'browser/webdata/web_data_service_factory.h',
         'browser/webdata/web_data_service_win.cc',
         'browser/webdata/web_database.cc',
         'browser/webdata/web_database.h',
         'browser/webdata/web_database_table.cc',
         'browser/webdata/web_database_table.h',
         'browser/webdata/web_intents_table.cc',
         'browser/webdata/web_intents_table.h',
         # These files are needed by page_cycler.cc
@@ skipping 981 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' ],
         },
       ],
      },
     ],
   ],
 }