Introduce HistoryClient interface

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 21 matching lines @@
         '../components/components.gyp:captive_portal',
         '../components/components.gyp:cloud_devices_common',
         '../components/components.gyp:component_metrics_proto',
         '../components/components.gyp:data_reduction_proxy_browser',
         '../components/components.gyp:domain_reliability',
         '../components/components.gyp:favicon_base',
         '../components/components.gyp:favicon_core',
         '../components/components.gyp:feedback_component',
         '../components/components.gyp:gcm_driver',
         '../components/components.gyp:google_core_browser',
+        '../components/components.gyp:history_core_browser',
         '../components/components.gyp:infobars_core',
         '../components/components.gyp:invalidation',
         '../components/components.gyp:metrics',
         '../components/components.gyp:navigation_metrics',
         '../components/components.gyp:os_crypt',
         '../components/components.gyp:password_manager_core_browser',
         '../components/components.gyp:password_manager_core_common',
         '../components/components.gyp:policy_component',
         '../components/components.gyp:precache_core',
         '../components/components.gyp:query_parser',
@@ skipping 711 matching lines @@
         'browser/history/android/sql_handler.cc',
         'browser/history/android/sql_handler.h',
         'browser/history/android/sqlite_cursor.cc',
         'browser/history/android/sqlite_cursor.h',
         'browser/history/android/urls_sql_handler.cc',
         'browser/history/android/urls_sql_handler.h',
         'browser/history/android/visit_sql_handler.cc',
         'browser/history/android/visit_sql_handler.h',
         'browser/history/archived_database.cc',
         'browser/history/archived_database.h',
+        'browser/history/chrome_history_client.cc',
+        'browser/history/chrome_history_client.h',
+        'browser/history/chrome_history_client_factory.cc',
+        'browser/history/chrome_history_client_factory.h',
         'browser/history/delete_directive_handler.cc',
         'browser/history/delete_directive_handler.h',
         'browser/history/download_database.cc',
         'browser/history/download_database.h',
         'browser/history/download_row.cc',
         'browser/history/download_row.h',
         'browser/history/expire_history_backend.cc',
         'browser/history/expire_history_backend.h',
         'browser/history/history_backend.cc',
         'browser/history/history_backend.h',
@@ skipping 2958 matching lines @@
             'package_name': 'org/chromium/chrome/browser',
             'template_deps': ['browser/android/tab_load_status.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }