Add a cache for FillFontFamilyMap.

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 2041 matching lines @@
       'browser/first_run/first_run.h',
       'browser/first_run/first_run_internal.h',
       'browser/first_run/first_run_internal_linux.cc',
       'browser/first_run/first_run_internal_mac.mm',
       'browser/first_run/first_run_internal_posix.cc',
       'browser/first_run/first_run_internal_win.cc',
       'browser/first_run/upgrade_util.h',
       'browser/first_run/upgrade_util_mac.cc',
       'browser/first_run/upgrade_util_win.cc',
       'browser/first_run/upgrade_util_win.h',
+      'browser/font_family_cache.cc',
+      'browser/font_family_cache.h',
       'browser/idle.cc',
       'browser/importer/external_process_importer_client.cc',
       'browser/importer/external_process_importer_client.h',
       'browser/importer/external_process_importer_host.cc',
       'browser/importer/external_process_importer_host.h',
       'browser/importer/firefox_profile_lock.cc',
       'browser/importer/firefox_profile_lock.h',
       'browser/importer/firefox_profile_lock_posix.cc',
       'browser/importer/firefox_profile_lock_win.cc',
       'browser/importer/importer_list.cc',
@@ skipping 1540 matching lines @@
             'package_name': 'org/chromium/chrome/browser',
             'template_deps': ['browser/android/tab_load_status.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }