Componentize kExperimentLabelSeparator & BuildExperimentDateString.

chrome/chrome_installer_util.gypi

 # Copyright (c) 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.
 
 {
   'target_defaults': {
     'variables': {
       'installer_util_target': 0,
     },
     'target_conditions': [
@@ skipping 38 matching lines @@
           'installer/util/duplicate_tree_detector.cc',
           'installer/util/duplicate_tree_detector.h',
           'installer/util/firewall_manager_win.cc',
           'installer/util/firewall_manager_win.h',
           'installer/util/google_chrome_binaries_distribution.cc',
           'installer/util/google_chrome_binaries_distribution.h',
           'installer/util/google_chrome_sxs_distribution.cc',
           'installer/util/google_chrome_sxs_distribution.h',
           'installer/util/google_update_constants.cc',
           'installer/util/google_update_constants.h',
-          'installer/util/google_update_experiment_util.cc',
-          'installer/util/google_update_experiment_util.h',
           'installer/util/google_update_settings.cc',
           'installer/util/google_update_settings.h',
           'installer/util/google_update_util.cc',
           'installer/util/google_update_util.h',
           'installer/util/helper.cc',
           'installer/util/helper.h',
           'installer/util/install_util.cc',
           'installer/util/install_util.h',
           'installer/util/installation_state.cc',
           'installer/util/installation_state.h',
@@ skipping 137 matching lines @@
           # GN version: //chrome/installer/util
           'target_name': 'installer_util',
           'type': 'static_library',
           'dependencies': [
             '<(DEPTH)/base/base.gyp:base',
             '<(DEPTH)/chrome/chrome_resources.gyp:chrome_resources',
             '<(DEPTH)/chrome/chrome_resources.gyp:chrome_strings',
           ],
           'sources': [
             # Note: sources list duplicated in GN build.
-            'installer/util/google_update_experiment_util.cc',
-            'installer/util/google_update_experiment_util.h',
             'installer/util/master_preferences.cc',
             'installer/util/master_preferences.h',
             'installer/util/master_preferences_constants.cc',
             'installer/util/master_preferences_constants.h',
           ],
           'include_dirs': [
             '<(DEPTH)',
           ],
         }
       ],
     }],
 
   ],
 }