Add a counter to calculate the total size of site data.

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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 100 matching lines @@
       'browser/browsing_data/downloads_counter.h',
       'browser/browsing_data/history_counter.cc',
       'browser/browsing_data/history_counter.h',
       'browser/browsing_data/local_data_container.cc',
       'browser/browsing_data/local_data_container.h',
       'browser/browsing_data/origin_filter_builder.cc',
       'browser/browsing_data/origin_filter_builder.h',
       'browser/browsing_data/passwords_counter.cc',
       'browser/browsing_data/passwords_counter.h',
       'browser/browsing_data/registrable_domain_filter_builder.cc',
+      'browser/browsing_data/site_data_counter.cc',
+      'browser/browsing_data/site_data_counter.h',
+      'browser/browsing_data/site_data_size_collector.cc',
+      'browser/browsing_data/site_data_size_collector.h',
       'browser/budget_service/background_budget_service.cc',
       'browser/budget_service/background_budget_service.h',
       'browser/budget_service/background_budget_service_factory.cc',
       'browser/budget_service/background_budget_service_factory.h',
       'browser/character_encoding.cc',
       'browser/character_encoding.h',
       'browser/chrome_browser_application_mac.h',
       'browser/chrome_browser_application_mac.mm',
       'browser/chrome_browser_field_trials.cc',
       'browser/chrome_browser_field_trials.h',
@@ skipping 4175 matching lines @@
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
             'common',
           ],
         },
       ],
     }],
   ],
 }