Reduce repetitive EventTarget subclassing

Source/core/loader/appcache/ApplicationCache.cpp

Index: Source/core/loader/appcache/ApplicationCache.cpp
diff --git a/Source/core/loader/appcache/ApplicationCache.cpp b/Source/core/loader/appcache/ApplicationCache.cpp
index 6aabc1c44fa8afc091f18a3ff776107708370743..5d88560bb1019063c4b89696a97fcecfe1d5c646 100644
--- a/Source/core/loader/appcache/ApplicationCache.cpp
+++ b/Source/core/loader/appcache/ApplicationCache.cpp
@@ -127,14 +127,4 @@ const AtomicString& ApplicationCache::toEventType(ApplicationCacheHost::EventID
     return EventTypeNames::error;
 }
 
-EventTargetData* ApplicationCache::eventTargetData()
-{
-    return &m_eventTargetData;
-}
-
-EventTargetData* ApplicationCache::ensureEventTargetData()
-{
-    return &m_eventTargetData;
-}
-
 } // namespace WebCore