WheelEvent's deltaX/deltaY should report real amount of pixels scrolled

LayoutTests/fast/events/wheelevent-basic-expected.txt

Index: LayoutTests/fast/events/wheelevent-basic-expected.txt
diff --git a/LayoutTests/fast/events/wheelevent-basic-expected.txt b/LayoutTests/fast/events/wheelevent-basic-expected.txt
index 88fcebd61947c6da2070c141256e922932e2ce06..f8e28df2ab8eceafd0e67b004c1c2d0bf5285f79 100644
--- a/LayoutTests/fast/events/wheelevent-basic-expected.txt
+++ b/LayoutTests/fast/events/wheelevent-basic-expected.txt
@@ -1,3 +1,11 @@
+TOP TOP TOP TOP TOP TOP TOP TOP TOP TOP TOP TOP TOP TOP
+Scroll mouse wheel over here
+Scroll mouse wheel over here
+Scroll mouse wheel over here
+Scroll mouse wheel over here
+Scroll mouse wheel over here
+Scroll mouse wheel over here
+END END END END END END END END END END END END END END
 Tests the basic functionality of the standard wheel event
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
@@ -13,12 +21,13 @@ PASS document.onwheel is null
 PASS testDiv.onwheel is null
 PASS testEvent.__proto__ is WheelEvent.prototype
 PASS testEvent.__proto__.__proto__ is MouseEvent.prototype
-PASS testEvent.deltaX is expectedDeltaX
-PASS testEvent.deltaY is expectedDeltaY
 PASS testEvent.deltaZ is 0
 PASS testEvent.deltaMode is WheelEvent.DOM_DELTA_PIXEL
+PASS deltaX > 0 is true
+PASS deltaX is expectedDeltaX
+PASS deltaY > 0 is true
+PASS deltaY is expectedDeltaY
 PASS successfullyParsed is true
 
 TEST COMPLETE
-TOP TOP TOP TOP TOP TOP TOP Scroll mouse wheel over here Scroll mouse wheel over here Scroll mouse wheel over here Scroll mouse wheel over here Scroll mouse wheel over here Scroll mouse wheel over here END END END END END END END