Update touch-action hit-testing to match latest spec changes.

Source/core/rendering/RenderBox.h

Index: Source/core/rendering/RenderBox.h
diff --git a/Source/core/rendering/RenderBox.h b/Source/core/rendering/RenderBox.h
index 6b4bd88734785e9618174434bc41ad0e9ffdd4a3..523fc0bc7a43513185c485055c7c476f337280c4 100644
--- a/Source/core/rendering/RenderBox.h
+++ b/Source/core/rendering/RenderBox.h
@@ -83,6 +83,20 @@ public:
 
     virtual bool backgroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect) const OVERRIDE;
 
+    // touch-action applies to all elements with both width AND height properties.
+    // According to the CSS Box Model Spec (http://dev.w3.org/csswg/css-box/#the-width-and-height-properties)
+    // width applies to all elements but non-replaced inline elements, table rows, and row groups and
+    // height applies to all elements but non-replaced inline elements, table columns, and column groups.
+    bool visibleForTouchAction() const OVERRIDE

[leviw_travelin_and_unemployed, 2014/04/07 18:57:43]

I don't think this makes sense to live in RenderBox as a virtual method anymore,
at least as written. RenderBoxes will never be non-replaced inlines
(non-replaced inlines can flow through different lines, which means they aren't
a box). This should either only be checking isTableRow/isRenderTableCol, or all
this logic should simply be pulled into RenderObject as a non-virtual function.

+    {
+        if (isInline() && !isReplaced())
+            return false;
+        if (isTableRow() || isRenderTableCol())
+            return false;
+
+        return true;
+    }
+
     // Use this with caution! No type checking is done!
     RenderBox* firstChildBox() const;
     RenderBox* lastChildBox() const;