Remove unused NodeIntersectionObserverData predicates.

third_party/WebKit/Source/core/dom/NodeIntersectionObserverData.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.
 
 #ifndef NodeIntersectionObserverData_h
 #define NodeIntersectionObserverData_h
 
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class Node;
 class IntersectionObservation;
 class IntersectionObserver;
 
 class NodeIntersectionObserverData : public GarbageCollectedFinalized<NodeIntersectionObserverData> {
 public:
     DECLARE_TRACE();
     NodeIntersectionObserverData();
     ~NodeIntersectionObserverData();
 
-    bool hasIntersectionObserver() const;
-    bool hasIntersectionObservation() const;
     IntersectionObservation* getObservationFor(IntersectionObserver&);
     void addObservation(IntersectionObservation&);
     void removeObservation(IntersectionObserver&);
     void activateValidIntersectionObservers(Node&);
     void deactivateAllIntersectionObservers(Node&);
 
 #if !ENABLE(OILPAN)
     void dispose();
 #endif
 
     WeakPtrWillBeRawPtr<Node> createWeakPtr(Node*);
 
 private:
     // IntersectionObservers for which the Node owning this data is root.
     HeapHashSet<WeakMember<IntersectionObserver>> m_intersectionObservers;
     // IntersectionObservations for which the Node owning this data is target.
     HeapHashMap<Member<IntersectionObserver>, Member<IntersectionObservation>> m_intersectionObservations;
 
 #if !ENABLE(OILPAN)
     OwnPtr<WeakPtrFactory<Node>> m_weakPointerFactory;
 #endif
 };
 
 } // namespace blink
 
 #endif // NodeIntersectionObserverData_h