[IndexedDB] Propogating changes to observers : Renderer

third_party/WebKit/public/platform/modules/indexeddb/WebIDBObserver.h

 // Copyright 2016 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.
 
 // This class makes the blink::IDBObserver visible to the content layer by holding a reference to it.
 
 #ifndef WebIDBObserver_h
 #define WebIDBObserver_h
 
+#include <vector>
+
 namespace blink {
 
+struct WebIDBObservation;
+
 class WebIDBObserver {
 public:
     virtual ~WebIDBObserver() {}
+
+    virtual bool transaction() = 0;
+    virtual bool noRecords() = 0;
+    virtual bool values() = 0;
+    virtual void onChange(const std::vector<WebIDBObservation>&, std::vector<int32_t> observationIndex) = 0;
 };
 
 } // namespace blink
 
 #endif // WebIDBObserver_h