Reland of Enable whitelist generation for official builds.

chrome/chrome_repack_locales.gni

Index: chrome/chrome_repack_locales.gni
diff --git a/chrome/chrome_repack_locales.gni b/chrome/chrome_repack_locales.gni
index 83b1e19a33b50508ba4a33351b54c895212ab906..b9a1d95f17bde24ce4e0e9af32c3193c9b7c97b1 100644
--- a/chrome/chrome_repack_locales.gni
+++ b/chrome/chrome_repack_locales.gni
@@ -6,6 +6,7 @@ import("//build/config/chrome_build.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//tools/grit/repack.gni")
+import("//tools/grit/grit_rule.gni")
 
 # Arguments:
 #
@@ -118,6 +119,10 @@ template("_repack_one_locale") {
       ]
     }
 
+    if (enable_resource_whitelist_generation) {
+      repack_whitelist = "$root_gen_dir/chrome/resource_whitelist.txt"
+      deps += [ "//chrome:resource_whitelist" ]
+    }
     output = invoker.output
   }
 }