IndexedDB: More database<->transaction relationship simplification

content/browser/indexed_db/indexed_db_database.h

 // Copyright (c) 2013 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_DATABASE_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 101 matching lines @@
   void DeleteIndex(int64 transaction_id, int64 object_store_id, int64 index_id);
 
   IndexedDBTransactionCoordinator& transaction_coordinator() {
     return transaction_coordinator_;
   }
   const IndexedDBTransactionCoordinator& transaction_coordinator() const {
     return transaction_coordinator_;
   }
 
   void TransactionCreated(IndexedDBTransaction* transaction);
-  void TransactionStarted(IndexedDBTransaction* transaction);
   void TransactionFinished(IndexedDBTransaction* transaction, bool committed);
 
   // Called by transactions to report failure committing to the backing store.
   void TransactionCommitFailed();
 
   void Get(int64 transaction_id,
            int64 object_store_id,
            int64 index_id,
            scoped_ptr<IndexedDBKeyRange> key_range,
            bool key_only,
@@ skipping 152 matching lines @@
 
   scoped_refptr<IndexedDBBackingStore> backing_store_;
   IndexedDBDatabaseMetadata metadata_;
 
   const Identifier identifier_;
   // This might not need to be a scoped_refptr since the factory's lifetime is
   // that of the page group, but it's better to be conservitive than sorry.
   scoped_refptr<IndexedDBFactory> factory_;
 
   IndexedDBTransactionCoordinator transaction_coordinator_;
-  IndexedDBTransaction* running_version_change_transaction_;
 
   typedef std::map<int64, IndexedDBTransaction*> TransactionMap;
   TransactionMap transactions_;
 
   class PendingOpenCall;
   typedef std::list<PendingOpenCall*> PendingOpenCallList;
   PendingOpenCallList pending_open_calls_;
 
   class PendingUpgradeCall;
   scoped_ptr<PendingUpgradeCall> pending_run_version_change_transaction_call_;
   class PendingSuccessCall;
   scoped_ptr<PendingSuccessCall> pending_second_half_open_;
 
   class PendingDeleteCall;
   typedef std::list<PendingDeleteCall*> PendingDeleteCallList;
   PendingDeleteCallList pending_delete_calls_;
 
   typedef list_set<IndexedDBConnection*> ConnectionSet;
   ConnectionSet connections_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_H_