Add hittest mode for Touch-action which ignore inline elements and svg elements

Source/core/rendering/HitTestRequest.h

Index: Source/core/rendering/HitTestRequest.h
diff --git a/Source/core/rendering/HitTestRequest.h b/Source/core/rendering/HitTestRequest.h
old mode 100644
new mode 100755
index 97dfa5165a72c72c815075403178ff20e7c9846e..6dc0580be70517936994f4c7d0f3cee38efc7a94
--- a/Source/core/rendering/HitTestRequest.h
+++ b/Source/core/rendering/HitTestRequest.h
@@ -40,7 +40,8 @@ public:
         AllowFrameScrollbars = 1 << 9,
         AllowChildFrameContent = 1 << 10,
         ChildFrameHitTest = 1 << 11,
-        IgnorePointerEventsNone = 1 << 12
+        IgnorePointerEventsNone = 1 << 12,
+        TouchAction = 1 << 13

[Rick Byers, 2014/01/17 16:12:46]

Please add a brief comment describing this: eg. "Hit testing for touch-action
considers only blocks-level elements":
http://www.w3.org/TR/pointerevents/#the-touch-action-css-property.  

Note that there's more detail about this in the working draft -
https://dvcs.w3.org/hg/pointerevents/raw-file/tip/pointerEvents.html#the-touc...
- but that'll be published at some point.

     };
 
     typedef unsigned HitTestRequestType;
@@ -63,6 +64,7 @@ public:
     bool allowsChildFrameContent() const { return m_requestType & AllowChildFrameContent; }
     bool isChildFrameHitTest() const { return m_requestType & ChildFrameHitTest; }
     bool ignorePointerEventsNone() const { return m_requestType & IgnorePointerEventsNone; }
+    bool touchAction() const { return m_requestType & TouchAction; }
 
     // Convenience functions
     bool touchMove() const { return move() && touchEvent(); }