Use chromium logic for database identifier<->origin conversions

content/browser/indexed_db/indexed_db_context_impl.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_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 30 matching lines @@
   IndexedDBContextImpl(const base::FilePath& data_path,
                        quota::SpecialStoragePolicy* special_storage_policy,
                        quota::QuotaManagerProxy* quota_manager_proxy,
                        base::MessageLoopProxy* webkit_thread_loop);
 
   WebIDBFactoryImpl* GetIDBFactory();
 
   // The indexed db directory.
   static const base::FilePath::CharType kIndexedDBDirectory[];
 
-  // The indexed db file extension.
-  static const base::FilePath::CharType kIndexedDBExtension[];
-
   // Disables the exit-time deletion of session-only data.
   void SetForceKeepSessionState() { force_keep_session_state_ = true; }
 
   // IndexedDBContext implementation:
   virtual std::vector<GURL> GetAllOrigins() OVERRIDE;
   virtual std::vector<IndexedDBInfo> GetAllOriginsInfo() OVERRIDE;
   virtual int64 GetOriginDiskUsage(const GURL& origin_url) OVERRIDE;
   virtual base::Time GetOriginLastModified(const GURL& origin_url) OVERRIDE;
   virtual void DeleteForOrigin(const GURL& origin_url) OVERRIDE;
   virtual base::FilePath GetFilePathForTesting(
@@ skipping 66 matching lines @@
   OriginToSizeMap space_available_map_;
   typedef std::set<WebIDBDatabaseImpl*> ConnectionSet;
   std::map<GURL, ConnectionSet> connections_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBContextImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_