IDBObserver: Lifetime Management: Adding Observer

third_party/WebKit/Source/modules/indexeddb/IDBObserver.h

Index: third_party/WebKit/Source/modules/indexeddb/IDBObserver.h
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBObserver.h b/third_party/WebKit/Source/modules/indexeddb/IDBObserver.h
index 16f38a2743d4e68fa79548aefa0dd05e17e557bb..43e196ed7132b58433a556b75f7c7d07fe3b68cb 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBObserver.h
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBObserver.h
@@ -6,14 +6,15 @@
 #define IDBObserver_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
-#include "modules/indexeddb/IDBDatabase.h"
-#include "modules/indexeddb/IDBTransaction.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
+class ExceptionState;
 class IDBObserverCallback;
 class IDBObserverInit;
+class IDBDatabase;
+class IDBTransaction;
 
 class IDBObserver final : public GarbageCollectedFinalized<IDBObserver>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
@@ -23,11 +24,12 @@ public:
     ~IDBObserver();
     // API methods
     void observe(IDBDatabase*, IDBTransaction*, ExceptionState&);
+    void unobserve(IDBDatabase*, ExceptionState&);
 
     DECLARE_TRACE();
 
 private:
-    explicit IDBObserver(IDBObserverCallback&, const IDBObserverInit&);
+    IDBObserver(IDBObserverCallback&, const IDBObserverInit&);
 
     Member<IDBObserverCallback> m_callback;
     bool m_transaction;