[IndexedDB] Adding transaction and value support to observers

content/browser/indexed_db/indexed_db_callbacks.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_CALLBACKS_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CALLBACKS_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 17 matching lines @@
 class IndexedDBCursor;
 class IndexedDBDatabase;
 struct IndexedDBDataLossInfo;
 struct IndexedDBDatabaseMetadata;
 struct IndexedDBReturnValue;
 struct IndexedDBValue;
 
 class CONTENT_EXPORT IndexedDBCallbacks
     : public base::RefCounted<IndexedDBCallbacks> {
  public:
+  // Destructively converts an IndexedDBValue to a Mojo Value.
+  static ::indexed_db::mojom::ValuePtr ConvertAndEraseValue(
+      IndexedDBValue* value);
+
   IndexedDBCallbacks(
       scoped_refptr<IndexedDBDispatcherHost> dispatcher_host,
       const url::Origin& origin,
       ::indexed_db::mojom::CallbacksAssociatedPtrInfo callbacks_info);
 
   virtual void OnError(const IndexedDBDatabaseError& error);
 
   // IndexedDBFactory::GetDatabaseNames
   virtual void OnSuccess(const std::vector<base::string16>& string);
 
@@ skipping 70 matching lines @@
 
   std::unique_ptr<IOThreadHelper, BrowserThread::DeleteOnIOThread> io_helper_;
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBCallbacks);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CALLBACKS_H_