Remove unused NodeIntersectionObserverData predicates.

third_party/WebKit/Source/core/dom/NodeIntersectionObserverData.cpp

Index: third_party/WebKit/Source/core/dom/NodeIntersectionObserverData.cpp
diff --git a/third_party/WebKit/Source/core/dom/NodeIntersectionObserverData.cpp b/third_party/WebKit/Source/core/dom/NodeIntersectionObserverData.cpp
index b52afc0ec8528bf136ac8e6f09e20b5a616e095e..5eadb0fb18e94fd62fa17eaf27829516fae8faa5 100644
--- a/third_party/WebKit/Source/core/dom/NodeIntersectionObserverData.cpp
+++ b/third_party/WebKit/Source/core/dom/NodeIntersectionObserverData.cpp
@@ -15,16 +15,6 @@ NodeIntersectionObserverData::NodeIntersectionObserverData() { }
 
 NodeIntersectionObserverData::~NodeIntersectionObserverData() { }
 
-bool NodeIntersectionObserverData::hasIntersectionObserver() const
-{
-    return !m_intersectionObservers.isEmpty();
-}
-
-bool NodeIntersectionObserverData::hasIntersectionObservation() const
-{
-    return !m_intersectionObservations.isEmpty();
-}
-
 IntersectionObservation* NodeIntersectionObserverData::getObservationFor(IntersectionObserver& observer)
 {
     auto i = m_intersectionObservations.find(&observer);