IndexedDB: Using a mock IndexedDBFactory for unit tests

content/browser/indexed_db/indexed_db_factory.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_FACTORY_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_
 
 #include <map>
 #include <set>
 
@@ skipping 60 matching lines @@
 
   // Called by an IndexedDBDatabase when it is actually deleted.
   virtual void DatabaseDeleted(
       const IndexedDBDatabase::Identifier& identifier) = 0;
 
   virtual size_t GetConnectionCount(const GURL& origin_url) const = 0;
 
  protected:
   friend class base::RefCountedThreadSafe<IndexedDBFactory>;
 
+  IndexedDBFactory() {}
   virtual ~IndexedDBFactory() {}
 
   virtual scoped_refptr<IndexedDBBackingStore> OpenBackingStore(
       const GURL& origin_url,
       const base::FilePath& data_directory,
       net::URLRequestContext* request_context,
       blink::WebIDBDataLoss* data_loss,
       std::string* data_loss_reason,
       bool* disk_full) = 0;
 
@@ skipping 11 matching lines @@
                            ForceCloseOpenDatabasesOnCommitFailure);
 
   virtual bool IsBackingStoreOpen(const GURL& origin_url) const = 0;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_