Fix CHECK failure in l10n_util::IsLocaleAvailable().

ui/base/l10n/l10n_util.cc

Index: ui/base/l10n/l10n_util.cc
diff --git a/ui/base/l10n/l10n_util.cc b/ui/base/l10n/l10n_util.cc
index 86b29802dbda5328321337f145d49d6deb44e8fb..0b7b9b7bcd3b2f2f7a4380f78dc0608d602af1f2 100644
--- a/ui/base/l10n/l10n_util.cc
+++ b/ui/base/l10n/l10n_util.cc
@@ -246,6 +246,14 @@ bool IsLocaleAvailable(const std::string& locale) {
   if (!l10n_util::IsLocaleSupportedByOS(locale))
     return false;
 
+  // If the ResourceBundle is not yet initialized, return false to avoid the
+  // CHECK failure in ResourceBundle::GetSharedInstance().
+  if (!ResourceBundle::HasSharedInstance())
+    return false;
+
+  // TODO(hshi): make ResourceBundle::LocaleDataPakExists() a static function
+  // so that this can be invoked without initializing the global instance.
+  // See crbug.com/230432: CHECK failure in GetUserDataDir().
   return ResourceBundle::GetSharedInstance().LocaleDataPakExists(locale);
 }