Move PathExists to base namespace.

chrome/common/extensions/api/i18n/default_locale_handler.cc

Index: chrome/common/extensions/api/i18n/default_locale_handler.cc
diff --git a/chrome/common/extensions/api/i18n/default_locale_handler.cc b/chrome/common/extensions/api/i18n/default_locale_handler.cc
index 5ac7f16e9f2bfd4adda00453a08698af004ea6d9..363128fc0f256050b340625177ebdcbaa26d4ae3 100644
--- a/chrome/common/extensions/api/i18n/default_locale_handler.cc
+++ b/chrome/common/extensions/api/i18n/default_locale_handler.cc
@@ -54,7 +54,7 @@ bool DefaultLocaleHandler::Validate(
     std::vector<InstallWarning>* warnings) const {
   // default_locale and _locales have to be both present or both missing.
   const base::FilePath path = extension->path().Append(kLocaleFolder);
-  bool path_exists = file_util::PathExists(path);
+  bool path_exists = base::PathExists(path);
   std::string default_locale =
       extensions::LocaleInfo::GetDefaultLocale(extension);
 
@@ -87,7 +87,7 @@ bool DefaultLocaleHandler::Validate(
 
     base::FilePath messages_path = locale_path.Append(kMessagesFilename);
 
-    if (!file_util::PathExists(messages_path)) {
+    if (!base::PathExists(messages_path)) {
       *error = base::StringPrintf(
           "%s %s", errors::kLocalesMessagesFileMissing,
           UTF16ToUTF8(messages_path.LossyDisplayName()).c_str());