port alternative_locale_resource to GN.

build/config/android/rules.gni

Index: build/config/android/rules.gni
diff --git a/build/config/android/rules.gni b/build/config/android/rules.gni
index c9388af8fd7d866b8ef653726d50607fa4ee1cd9..d720411efe66ada4145a860ecb343e3d445857e5 100644
--- a/build/config/android/rules.gni
+++ b/build/config/android/rules.gni
@@ -517,6 +517,7 @@ template("locale_pak_resources") {
     build_config = _build_config
     resources_zip = _resources_zip
     type = "android_resources"
+    is_locale_resource = true
   }
 
   action("${target_name}__create_resources_zip") {
@@ -1221,6 +1222,8 @@ template("android_java_prebuilt") {
 #   testonly: Marks this target as "test-only".
 #   write_asset_list: Adds an extra file to the assets, which contains a list of
 #     all other asset files.
+#   alternative_locale_resource_dep: The locale resource target which overrides
+#     any exsting locale resources in dep graph.
 #
 #   DEPRECATED_java_in_dir: Directory containing java files. All .java files in
 #     this directory will be included in the library. This is only supported to
@@ -1394,6 +1397,11 @@ template("android_apk") {
       deps += invoker.deps
     }
 
+    if (defined(invoker.alternative_locale_resource_dep)) {
+      deps += [ invoker.alternative_locale_resource_dep ]
+      has_alternative_locale_resource = true
+    }
+
     proguard_enabled = _proguard_enabled
     if (_proguard_enabled) {
       proguard_info = "$_proguard_jar_path.info"