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 e2c06cf1ea8e7b4eccc7be0f1ff7914a35b5f9c8..b614c638144b0b66fc1c1d35dbd1b6b93966e7d1 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
+    {
+        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;