Implement the ability to obliterate a storage partition from disk.

content/public/browser/storage_partition.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 CONTENT_PUBLIC_BROWSER_STORAGE_PARTITION_H_
 #define CONTENT_PUBLIC_BROWSER_STORAGE_PARTITION_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 50 matching lines @@
   //
   // TODO(ajwong): Right now, the embedder may have some
   // URLRequestContextGetter objects that the StoragePartition does not know
   // about.  This will no longer be the case when we resolve
   // http://crbug.com/159193. Remove |request_context_getter| when that bug
   // is fixed.
   virtual void AsyncClearDataForOrigin(
       const GURL& storage_origin,
       net::URLRequestContextGetter* request_context_getter) = 0;
 
+  // Similar to AsyncClearDataForOrigin(), but deletes all data out of the
+  // StoragePartition rather than just the data related to this origin.
+  virtual void AsyncClearAllData() = 0;
+
  protected:
   virtual ~StoragePartition() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_STORAGE_PARTITION_H_