DomStorage: Clear the renderer side cache too when the user clears browsing data.

webkit/dom_storage/dom_storage_namespace.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_DOM_STORAGE_DOM_STORAGE_NAMESPACE_H_
 #define WEBKIT_DOM_STORAGE_DOM_STORAGE_NAMESPACE_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 29 matching lines @@
   const std::string& persistent_namespace_id() const {
     return persistent_namespace_id_;
   }
 
   // Returns the storage area for the given origin,
   // creating instance if needed. Each call to open
   // must be balanced with a call to CloseStorageArea.
   DomStorageArea* OpenStorageArea(const GURL& origin);
   void CloseStorageArea(DomStorageArea* area);
 
+  // Returns the area for |origin| if it's open, otherwise NULL.
+  DomStorageArea* GetOpenStorageArea(const GURL& origin);
+
   // Creates a clone of |this| namespace including
   // shallow copies of all contained areas.
   // Should only be called for session storage namespaces.
   DomStorageNamespace* Clone(int64 clone_namespace_id,
                              const std::string& clone_persistent_namespace_id);
 
   void DeleteOrigin(const GURL& origin);
   void PurgeMemory();
   void Shutdown();
 
@@ skipping 21 matching lines @@
   FilePath directory_;
   AreaMap areas_;
   scoped_refptr<DomStorageTaskRunner> task_runner_;
   scoped_refptr<SessionStorageDatabase> session_storage_database_;
 };
 
 }  // namespace dom_storage
 
 
 #endif  // WEBKIT_DOM_STORAGE_DOM_STORAGE_NAMESPACE_H_