Adding in memory log of history visit database. This...

chrome/chrome.gyp

 # Copyright (c) 2009 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': {
     'chromium_code': 1,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
@@ skipping 1367 matching lines @@
         'browser/history/text_database.cc',
         'browser/history/text_database.h',
         'browser/history/text_database_manager.cc',
         'browser/history/text_database_manager.h',
         'browser/history/thumbnail_database.cc',
         'browser/history/thumbnail_database.h',
         'browser/history/url_database.cc',
         'browser/history/url_database.h',
         'browser/history/visit_database.cc',
         'browser/history/visit_database.h',
+        'browser/history/visit_log.cc',
+        'browser/history/visit_log.h',
         'browser/history/visit_tracker.cc',
         'browser/history/visit_tracker.h',
         'browser/history/visitsegment_database.cc',
         'browser/history/visitsegment_database.h',
         'browser/hung_renderer_dialog.h',
         'browser/icon_loader.h',
         'browser/icon_loader.cc',
         'browser/icon_loader_linux.cc',
         'browser/icon_loader_mac.mm',
         'browser/icon_loader_win.cc',
@@ skipping 2643 matching lines @@
         'browser/history/history_unittest.cc',
         'browser/history/query_parser_unittest.cc',
         'browser/history/snippet_unittest.cc',
         'browser/history/starred_url_database_unittest.cc',
         'browser/history/text_database_manager_unittest.cc',
         'browser/history/text_database_unittest.cc',
         'browser/history/thumbnail_database_unittest.cc',
         'browser/thumbnail_store_unittest.cc',
         'browser/history/url_database_unittest.cc',
         'browser/history/visit_database_unittest.cc',
+        'browser/history/visit_log_unittest.cc',
         'browser/history/visit_tracker_unittest.cc',
         'browser/importer/firefox_importer_unittest_messages_internal.h',
         'browser/importer/firefox_importer_unittest.cc',
         'browser/importer/firefox_importer_unittest_utils.h',
         'browser/importer/firefox_importer_unittest_utils_mac.cc',
         'browser/importer/importer_unittest.cc',
         'browser/importer/safari_importer_unittest.mm',
         'browser/importer/toolbar_importer_unittest.cc',
         'browser/importer/firefox_profile_lock_unittest.cc',
         'browser/in_process_webkit/dom_storage_dispatcher_host_unittest.cc',
@@ skipping 1838 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],
   ],  # 'conditions'
 }