Move PathIsWritable, DirectoryExists, ContentsEqual, and TextContentsEqual to the base namespace.

webkit/browser/dom_storage/dom_storage_database.cc

Index: webkit/browser/dom_storage/dom_storage_database.cc
diff --git a/webkit/browser/dom_storage/dom_storage_database.cc b/webkit/browser/dom_storage/dom_storage_database.cc
index 12e38ed74ddac86fe3ef5f41d12703c0e6c39a75..8a94fc85cc322ff2e6fb3ac78b87691b95fe64e3 100644
--- a/webkit/browser/dom_storage/dom_storage_database.cc
+++ b/webkit/browser/dom_storage/dom_storage_database.cc
@@ -266,7 +266,7 @@ bool DomStorageDatabase::DeleteFileAndRecreate() {
   tried_to_recreate_ = true;
 
   // If it's not a directory and we can delete the file, try and open it again.
-  if (!file_util::DirectoryExists(file_path_) &&
+  if (!base::DirectoryExists(file_path_) &&
       sql::Connection::Delete(file_path_)) {
     return LazyOpen(true);
   }