DOMStorageContextImpl that's implemented in terms of the new dom_storage classes.

webkit/dom_storage/dom_storage_area.h

Index: webkit/dom_storage/dom_storage_area.h
===================================================================
--- webkit/dom_storage/dom_storage_area.h	(revision 127221)
+++ webkit/dom_storage/dom_storage_area.h	(working copy)
@@ -45,6 +45,8 @@
 
   DomStorageArea* ShallowCopy(int64 destination_namespace_id);
 
+  static FilePath DatabaseFileNameFromOrigin(const GURL& origin);
+
  private:
   FRIEND_TEST_ALL_PREFIXES(DomStorageAreaTest, DomStorageAreaBasics);
   FRIEND_TEST_ALL_PREFIXES(DomStorageAreaTest, BackingDatabaseOpened);
@@ -60,8 +62,6 @@
   void ScheduleCommitChanges();
   void CommitChanges();
 
-  static FilePath DatabaseFileNameFromOrigin(const GURL& origin);
-
   ~DomStorageArea();
 
   int64 namespace_id_;