Move directory creation functions to base namespace.

content/browser/dom_storage/dom_storage_context_impl.cc

Index: content/browser/dom_storage/dom_storage_context_impl.cc
diff --git a/content/browser/dom_storage/dom_storage_context_impl.cc b/content/browser/dom_storage/dom_storage_context_impl.cc
index 44c4242c5306ea6fc200cdd60be2c6ba61f53c53..2c31bd627b3ed2c581d592373ce9b937883afd97 100644
--- a/content/browser/dom_storage/dom_storage_context_impl.cc
+++ b/content/browser/dom_storage/dom_storage_context_impl.cc
@@ -68,7 +68,7 @@ DOMStorageNamespace* DOMStorageContextImpl::GetStorageNamespace(
   if (found == namespaces_.end()) {
     if (namespace_id == kLocalStorageNamespaceId) {
       if (!localstorage_directory_.empty()) {
-        if (!file_util::CreateDirectory(localstorage_directory_)) {
+        if (!base::CreateDirectory(localstorage_directory_)) {
           LOG(ERROR) << "Failed to create 'Local Storage' directory,"
                         " falling back to in-memory only.";
           localstorage_directory_ = base::FilePath();