Stub implementation for PushRegistration.unregister().

Source/modules/push_messaging/PushRegistration.h

Index: Source/modules/push_messaging/PushRegistration.h
diff --git a/Source/modules/push_messaging/PushRegistration.h b/Source/modules/push_messaging/PushRegistration.h
index 9608510ed34643be34d34fb69c8784a834377942..a85a4468ee52e6879767583dc1641ef06e8e2f3e 100644
--- a/Source/modules/push_messaging/PushRegistration.h
+++ b/Source/modules/push_messaging/PushRegistration.h
@@ -5,35 +5,38 @@
 #ifndef PushRegistration_h
 #define PushRegistration_h
 
+#include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "platform/heap/Handle.h"
-#include "public/platform/WebPushRegistration.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
+class ServiceWorkerRegistration;
 class ScriptPromiseResolver;
+class ScriptState;
+struct WebPushRegistration;
 
 class PushRegistration final : public GarbageCollectedFinalized<PushRegistration>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    // For CallbackPromiseAdapter.
-    typedef WebPushRegistration WebType;
-    static PushRegistration* take(ScriptPromiseResolver*, WebType* registrationRaw);
-    static void dispose(WebType* registrationRaw);
+    static PushRegistration* take(ScriptPromiseResolver*, WebPushRegistration*, ServiceWorkerRegistration*);
+    static void dispose(WebPushRegistration* registrationRaw);
 
     virtual ~PushRegistration();
 
     const String& pushEndpoint() const { return m_pushEndpoint; }
     const String& pushRegistrationId() const { return m_pushRegistrationId; }
+    ScriptPromise unregister(ScriptState*);
 
-    void trace(Visitor*) { }
+    void trace(Visitor*);
 
 private:
-    PushRegistration(const String& pushEndpoint, const String& pushRegistrationId);
+    PushRegistration(const String& pushEndpoint, const String& pushRegistrationId, ServiceWorkerRegistration*);
 
     String m_pushEndpoint;
     String m_pushRegistrationId;
+    Member<ServiceWorkerRegistration> m_serviceWorkerRegistration;
 };
 
 } // namespace blink