include RefCounted.h where needed, only.

third_party/WebKit/Source/core/testing/NullExecutionContext.h

 // Copyright 2014 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 NullExecutionContext_h
 #define NullExecutionContext_h
 
 #include "bindings/core/v8/ScriptCallStack.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/SecurityContext.h"
 #include "core/events/EventQueue.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/KURL.h"
-#include "wtf/RefCounted.h"
 
 namespace blink {
 
 class NullExecutionContext final : public GarbageCollectedFinalized<NullExecutionContext>, public SecurityContext, public ExecutionContext {
     USING_GARBAGE_COLLECTED_MIXIN(NullExecutionContext);
 public:
     NullExecutionContext();
 
     void disableEval(const String&) override { }
     String userAgent() const override { return String(); }
@@ skipping 17 matching lines @@
     void setIsSecureContext(bool);
     bool isSecureContext(String& errorMessage, const SecureContextCheck = StandardSecureContextCheck) const override;
 
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(m_queue);
         SecurityContext::trace(visitor);
         ExecutionContext::trace(visitor);
     }
 
-#if !ENABLE(OILPAN)
-    using RefCounted<NullExecutionContext>::ref;
-    using RefCounted<NullExecutionContext>::deref;
-
-    void refExecutionContext() override { ref(); }
-    void derefExecutionContext() override { deref(); }
-#endif
-
 protected:
     const KURL& virtualURL() const override { return m_dummyURL; }
     KURL virtualCompleteURL(const String&) const override { return m_dummyURL; }
 
 private:
     bool m_tasksNeedSuspension;
     bool m_isSecureContext;
     Member<EventQueue> m_queue;
 
     KURL m_dummyURL;
 };
 
 } // namespace blink
 
 #endif // NullExecutionContext_h