Revert "Implement a Hit Test Cache for same point hits."

Source/core/testing/Internals.cpp

Index: Source/core/testing/Internals.cpp
diff --git a/Source/core/testing/Internals.cpp b/Source/core/testing/Internals.cpp
index 47246b8c65bae859f5801aa49a0db062d0af8dc6..5b224b03dfae57481a9c25238f15656f8497404a 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -317,41 +317,6 @@ unsigned Internals::hitTestCount(Document* doc, ExceptionState& exceptionState)
     return doc->layoutView()->hitTestCount();
 }
 
-unsigned Internals::hitTestCacheHits(Document* doc, ExceptionState& exceptionState) const
-{
-    if (!doc) {
-        exceptionState.throwDOMException(InvalidAccessError, "Must supply document to check");
-        return 0;
-    }
-
-    return doc->layoutView()->hitTestCacheHits();
-}
-
-Element* Internals::elementFromPointNoCache(Document* doc, double x, double y, ExceptionState& exceptionState) const
-{
-    if (!doc) {
-        exceptionState.throwDOMException(InvalidAccessError, "Must supply document to check");
-        return 0;
-    }
-
-    if (!doc->layoutView())
-        return 0;
-
-    return doc->elementFromPointNoCache(x, y);
-}
-
-void Internals::clearHitTestCache(Document* doc, ExceptionState& exceptionState) const
-{
-    if (!doc) {
-        exceptionState.throwDOMException(InvalidAccessError, "Must supply document to check");
-        return;
-    }
-
-    if (!doc->layoutView())
-        return;
-
-    doc->layoutView()->clearHitTestCache();
-}
 
 bool Internals::isPreloaded(const String& url)
 {