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

LayoutTests/fast/events/hit-test-counts-expected.txt

 Count how many hit tests are required for various event scenarios. Hit tests can be expensive and it's often tempting to add more. These values should only ever be changed to go down, not up.
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
 PASS successfullyParsed is true
 
 TEST COMPLETE
-PASS successfullyParsed is true
-
-TEST COMPLETE
 Event on a simple div
 ---------------------
-Initial: 0+0
-MouseMove: 1+0
-MouseDown: 1+2
-MouseUp: 0+1
-Wheel: 0+1
-TouchStart: 1+0
-TouchMove: 0+0
-TouchEnd: 0+0
-GestureTapDown: 1+1
-GestureShowPress: 1+1
-GestureTap: 1+3 [with multiTargetTapNotification: 1+4]
-GestureScrollBegin: 0+1
-GestureTapCancel: 1+0
-GestureScrollUpdate: 0+0
-GestureScrollEnd: 0+0
+Initial: 0
+MouseMove: 1
+MouseDown: 3
+MouseUp: 1
+Wheel: 1
+TouchStart: 1
+TouchMove: 0
+TouchEnd: 0
+GestureTapDown: 2
+GestureShowPress: 2
+GestureTap: 4 [with multiTargetTapNotification: 5]
+GestureScrollBegin: 1
+GestureTapCancel: 1
+GestureScrollUpdate: 0
+GestureScrollEnd: 0
 
 Event entirely over one iframe nested in another
 ---------------------
-Initial: 0+0 0+0 0+0
-MouseMove: 1+0 1+0 1+0
-MouseDown: 1+1 1+1 1+1
-MouseUp: 0+1 0+1 0+1
-Wheel: 0+1 0+1 0+1
-TouchStart: 1+0 1+0 1+0
-TouchMove: 0+0 0+0 0+0
-TouchEnd: 0+0 0+0 0+0
-GestureTapDown: 1+0 1+0 1+1
-GestureShowPress: 1+0 1+0 1+1
-GestureTap: 1+0 1+0 1+3
-GestureScrollBegin: 0+1 0+1 0+1
-GestureTapCancel: 1+0 1+0 1+0
-GestureScrollUpdate: 0+0 0+0 0+0
-GestureScrollEnd: 0+0 0+0 0+0
+Initial: 0 0 0
+MouseMove: 1 1 1
+MouseDown: 2 2 2
+MouseUp: 1 1 1
+Wheel: 1 1 1
+TouchStart: 1 1 1
+TouchMove: 0 0 0
+TouchEnd: 0 0 0
+GestureTapDown: 1 1 2
+GestureShowPress: 1 1 2
+GestureTap: 1 1 4
+GestureScrollBegin: 1 1 1
+GestureTapCancel: 1 1 1
+GestureScrollUpdate: 0 0 0
+GestureScrollEnd: 0 0 0
 
 Event near boundary of two iframes
 ---------------------
-Initial: 0+0 0+0 0+0
-MouseMove: 1+0 1+0 0+0
-MouseDown: 1+1 1+1 0+0
-MouseUp: 0+1 0+1 0+0
-Wheel: 0+1 0+1 0+0
-TouchStart: 1+0 1+0 0+0
-TouchMove: 0+0 0+0 0+0
-TouchEnd: 0+0 0+0 0+0
-GestureTapDown: 1+0 4+0 16+0
-GestureShowPress: 1+0 4+0 16+0
-GestureTap: 1+0 4+0 16+0
-GestureScrollBegin: 0+1 0+1 0+0
-GestureTapCancel: 1+0 0+1 0+0
-GestureScrollUpdate: 0+0 0+0 0+0
-GestureScrollEnd: 0+0 0+0 0+0
+Initial: 0 0 0
+MouseMove: 1 1 0
+MouseDown: 2 2 0
+MouseUp: 1 1 0
+Wheel: 1 1 0
+TouchStart: 1 1 0
+TouchMove: 0 0 0
+TouchEnd: 0 0 0
+GestureTapDown: 1 4 16
+GestureShowPress: 1 4 16
+GestureTap: 1 4 16 [with multiTargetTapNotification: 2 8 32]
+GestureScrollBegin: 1 1 0
+GestureTapCancel: 1 1 0
+GestureScrollUpdate: 0 0 0
+GestureScrollEnd: 0 0 0
 
 Event on a simple div (desktop viewport)
 ---------------------
-Initial: 0+0
-MouseMove: 1+0
-MouseDown: 1+2
-MouseUp: 0+1
-Wheel: 0+1
-TouchStart: 1+0
-TouchMove: 0+0
-TouchEnd: 0+0
-GestureTapDown: 1+1
-GestureShowPress: 1+1
-GestureTap: 1+3 [with multiTargetTapNotification: 2+4]
-GestureScrollBegin: 0+1
-GestureTapCancel: 1+0
-GestureScrollUpdate: 0+0
-GestureScrollEnd: 0+0
+Initial: 0
+MouseMove: 1
+MouseDown: 3
+MouseUp: 1
+Wheel: 1
+TouchStart: 1
+TouchMove: 0
+TouchEnd: 0
+GestureTapDown: 2
+GestureShowPress: 2
+GestureTap: 4 [with multiTargetTapNotification: 6]
+GestureScrollBegin: 1
+GestureTapCancel: 1
+GestureScrollUpdate: 0
+GestureScrollEnd: 0
 
-PASS successfullyParsed is true
 
-TEST COMPLETE
-