Componentize kExperimentLabelSeparator & BuildExperimentDateString.

chrome/installer/util/BUILD.gn

Index: chrome/installer/util/BUILD.gn
diff --git a/chrome/installer/util/BUILD.gn b/chrome/installer/util/BUILD.gn
index ceedefd1ac017675d5e80c1d5fd2a9e3b90f3ef2..76819e55d673cd46f86e2cb3486ea5ffccbdd5f6 100644
--- a/chrome/installer/util/BUILD.gn
+++ b/chrome/installer/util/BUILD.gn
@@ -61,6 +61,7 @@ static_library("util") {
       ":strings",
       "//base/third_party/dynamic_annotations",
       "//components/metrics",
+      "//components/variations",
       "//courgette:courgette_lib",
       "//crypto",
       "//third_party/bspatch",
@@ -122,8 +123,6 @@ static_library("util") {
       "google_chrome_sxs_distribution.h",
       "google_update_constants.cc",
       "google_update_constants.h",
-      "google_update_experiment_util.cc",
-      "google_update_experiment_util.h",
       "google_update_settings.cc",
       "google_update_settings.h",
       "google_update_util.cc",
@@ -167,13 +166,12 @@ static_library("util") {
     ]
   } else {
     sources = [
-      "google_update_experiment_util.cc",
-      "google_update_experiment_util.h",
       "master_preferences.cc",
       "master_preferences.h",
       "master_preferences_constants.cc",
       "master_preferences_constants.h",
     ]
+    deps += [ "//components/variations" ]
   }
 }
 
@@ -273,6 +271,7 @@ if (is_win) {
       "//chrome:other_version",
       "//chrome/common",
       "//chrome/installer/test:alternate_version_generator_lib",
+      "//components/variations",
       "//content/public/common",
 
       # TODO(rockot): Remove this hack when we fix mojo environment deps.