Use BCP47 compliant format for locale representation

android_webview/browser/aw_browser_main_parts.cc

Index: android_webview/browser/aw_browser_main_parts.cc
diff --git a/android_webview/browser/aw_browser_main_parts.cc b/android_webview/browser/aw_browser_main_parts.cc
index d30b07d66f5c564768a98f0d52257e4abbd4c54a..bfb81d87d1e15995b2ed65d59d6d45ef15a12bc3 100644
--- a/android_webview/browser/aw_browser_main_parts.cc
+++ b/android_webview/browser/aw_browser_main_parts.cc
@@ -96,8 +96,7 @@ void AwBrowserMainParts::PreEarlyInitialization() {
 int AwBrowserMainParts::PreCreateThreads() {
   ui::SetLocalePaksStoredInApk(true);
   std::string locale = ui::ResourceBundle::InitSharedInstanceWithLocale(
-      base::android::GetDefaultLocale(),
-      NULL,
+      base::android::GetDefaultLocaleString(), NULL,
       ui::ResourceBundle::LOAD_COMMON_RESOURCES);
   if (locale.empty()) {
     LOG(WARNING) << "Failed to load locale .pak from the apk. "