Remove idb transaction callbacks onTimeout stuff that was removed from the spec.

content/common/indexed_db_messages.h

 // Copyright (c) 2010 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.
 
 // Message definition file, included multiple times, hence no include guard.
 
 #include <vector>
 
 #include "content/common/indexed_db_key.h"
 #include "content/common/indexed_db_param_traits.h"
@@ skipping 145 matching lines @@
                      int /* code */,
                      string16 /* message */)
 IPC_MESSAGE_CONTROL1(IndexedDBMsg_CallbacksBlocked,
                      int32 /* response_id */)
 
 // IDBTransactionCallback message handlers.
 IPC_MESSAGE_CONTROL1(IndexedDBMsg_TransactionCallbacksAbort,
                      int32 /* transaction_id */)
 IPC_MESSAGE_CONTROL1(IndexedDBMsg_TransactionCallbacksComplete,
                      int32 /* transaction_id */)
-IPC_MESSAGE_CONTROL1(IndexedDBMsg_TransactionCallbacksTimeout,
-                     int32 /* transaction_id */)
 
 IPC_MESSAGE_CONTROL2(IndexedDBMsg_DatabaseCallbacksVersionChange,
                      int32, /* database_id */
                      string16) /* new_version */
 
 // Indexed DB messages sent from the renderer to the browser.
 
 // WebIDBCursor::direction() message.
 IPC_SYNC_MESSAGE_CONTROL1_1(IndexedDBHostMsg_CursorDirection,
                             int32, /* idb_cursor_id */
@@ skipping 246 matching lines @@
 IPC_MESSAGE_CONTROL1(IndexedDBHostMsg_TransactionAbort,
                      int32 /* idb_transaction_id */)
 
 // IDBTransaction::DidCompleteTaskEvents() message.
 IPC_MESSAGE_CONTROL1(IndexedDBHostMsg_TransactionDidCompleteTaskEvents,
                      int32 /* idb_transaction_id */)
 
 // WebIDBTransaction::~WebIDBTransaction() message.
 IPC_MESSAGE_CONTROL1(IndexedDBHostMsg_TransactionDestroyed,
                      int32 /* idb_transaction_id */)