Allow overriding Chromium-branded Android resources.

chrome/android/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/module_args/v8.gni")
 import("//chrome/version.gni")
 import("//testing/test.gni")
 import("//third_party/icu/config.gni")
@@ skipping 25 matching lines @@
 locale_pak_resources("chrome_locale_paks") {
   sources = chrome_android_paks_gypi.chrome_android_pak_locale_resources
 
   deps = [
     "//chrome:packed_resources",
   ]
 }
 
 # GYP: //chrome/chrome.gyp:chrome_java (resources part)
 android_resources("chrome_java_resources") {
-  resource_dirs = [
-    "java/res",
-    "java/res_default",
-  ]
+  if (!defined(android_branding_res_dirs)) {
+    android_branding_res_dirs = [ "//chrome/android/java/res_chromium" ]
+  }
+  resource_dirs = [ "java/res" ] + android_branding_res_dirs
   deps = [
     ":chrome_locale_paks",
     ":chrome_strings_grd",
     "//components/policy:app_restrictions_resources",
     "//content/public/android:content_java_resources",
     "//chrome/app:java_strings_grd",
     "//third_party/android_data_chart:android_data_chart_java_resources",
     "//third_party/android_media:android_media_resources",
   ]
   if (!enable_configuration_policy) {
@@ skipping 688 matching lines @@
   # TODO(GYP,cjhopman): Does this need version code/name?
   apk_name = "ChromePublicTest"
   apk_under_test = ":chrome_public_apk"
   android_manifest = chrome_public_test_apk_manifest
   deps = [
     ":chrome_public_test_apk_manifest",
     "//chrome/android:chrome_shared_test_java",
   ]
   isolate_file = "../chrome_public_test_apk.isolate"
 }