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

Source/core/page/EventHandler.cpp

Index: Source/core/page/EventHandler.cpp
diff --git a/Source/core/page/EventHandler.cpp b/Source/core/page/EventHandler.cpp
index 45fe20680c12aea344896254b99cebd0549f4dd1..4ba7e9154a65e0b942cb9f24ebf8e49e79547750 100644
--- a/Source/core/page/EventHandler.cpp
+++ b/Source/core/page/EventHandler.cpp
@@ -2191,10 +2191,10 @@ void EventHandler::defaultWheelEventHandler(Node* startNode, WheelEvent* wheelEv
 
     // Break up into two scrolls if we need to.  Diagonal movement on
     // a MacBook pro is an example of a 2-dimensional mouse wheel event (where both deltaX and deltaY can be set).
-    if (scrollNode(wheelEvent->rawDeltaX(), granularity, ScrollLeft, ScrollRight, startNode, &stopNode))
+    if (scrollNode(wheelEvent->deltaX(), granularity, ScrollRight, ScrollLeft, startNode, &stopNode))
         wheelEvent->setDefaultHandled();
 
-    if (scrollNode(wheelEvent->rawDeltaY(), granularity, ScrollUp, ScrollDown, startNode, &stopNode))
+    if (scrollNode(wheelEvent->deltaY(), granularity, ScrollDown, ScrollUp, startNode, &stopNode))
         wheelEvent->setDefaultHandled();
 
     if (!m_latchedWheelEventNode)