Remove declaration of no-longer existing methods on PromiseRejectionEvents

third_party/WebKit/Source/core/events/PromiseRejectionEvent.h

 // Copyright 2015 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 PromiseRejectionEvent_h
 #define PromiseRejectionEvent_h
 
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "bindings/core/v8/ScopedPersistent.h"
 #include "bindings/core/v8/ScriptPromise.h"
@@ skipping 30 matching lines @@
 
     DECLARE_VIRTUAL_TRACE();
 
     DECLARE_VIRTUAL_TRACE_WRAPPERS();
 
 private:
     PromiseRejectionEvent();
     PromiseRejectionEvent(ScriptState*, const AtomicString&, const PromiseRejectionEventInit&);
     ~PromiseRejectionEvent() override;
 
-    static void didCollectPromise(const v8::WeakCallbackInfo<PromiseRejectionEvent>&);
-    static void didCollectReason(const v8::WeakCallbackInfo<PromiseRejectionEvent>&);
-
     RefPtr<ScriptState> m_scriptState;
     ScopedPersistent<v8::Value> m_promise;
     ScopedPersistent<v8::Value> m_reason;
 };
 
 } // namespace blink
 
 #endif // PromiseRejectionEvent_h