IndexedDB: Prevent store/index deletion from racing ahead of use

content/browser/indexed_db/mock_indexed_db_callbacks.cc

 // Copyright 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.
 
 #include "content/browser/indexed_db/mock_indexed_db_callbacks.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 MockIndexedDBCallbacks::MockIndexedDBCallbacks()
     : IndexedDBCallbacks(NULL, 0, 0), expect_connection_(true) {}
 MockIndexedDBCallbacks::MockIndexedDBCallbacks(bool expect_connection)
     : IndexedDBCallbacks(NULL, 0, 0), expect_connection_(expect_connection) {}
 
 MockIndexedDBCallbacks::~MockIndexedDBCallbacks() {
   EXPECT_EQ(expect_connection_, !!connection_);
 }
 
 void MockIndexedDBCallbacks::OnSuccess() {}
 
 void MockIndexedDBCallbacks::OnSuccess(int64) {}
 
 void MockIndexedDBCallbacks::OnSuccess(const std::vector<base::string16>&) {}
 
+void MockIndexedDBCallbacks::OnSuccess(const IndexedDBKey& key) {}
+
 void MockIndexedDBCallbacks::OnSuccess(
     scoped_ptr<IndexedDBConnection> connection,
     const IndexedDBDatabaseMetadata& metadata) {
   connection_ = connection.Pass();
 }
 
 }  // namespace content