Componentize kExperimentLabelSeparator & BuildExperimentDateString.

chrome/chrome_installer_util.gypi

Index: chrome/chrome_installer_util.gypi
diff --git a/chrome/chrome_installer_util.gypi b/chrome/chrome_installer_util.gypi
index 334e427b1d170d0f1c8b0a3756caaf0b8c76c817..efce6963c4249ab4f78bf0d9ffb10638feef7a8e 100644
--- a/chrome/chrome_installer_util.gypi
+++ b/chrome/chrome_installer_util.gypi
@@ -10,6 +10,9 @@
     'target_conditions': [
       # This part is shared between the two versions of the target.
       ['installer_util_target==1', {
+        'dependencies': [
+          '<(DEPTH)/components/components.gyp:variations',
+        ],
         'sources': [
           'installer/util/advanced_firewall_manager_win.cc',
           'installer/util/advanced_firewall_manager_win.h',
@@ -56,8 +59,6 @@
           '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',
@@ -212,11 +213,10 @@
             '<(DEPTH)/base/base.gyp:base',
             '<(DEPTH)/chrome/chrome_resources.gyp:chrome_resources',
             '<(DEPTH)/chrome/chrome_resources.gyp:chrome_strings',
+            '<(DEPTH)/components/components.gyp:variations',
           ],
           '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',