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

Source/core/rendering/RenderBlock.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 98 matching lines @@
     static void removePositionedObject(RenderBox*);
     void removePositionedObjects(RenderBlock*, ContainingBlockState = SameContainingBlock);
 
     TrackedRendererListHashSet* positionedObjects() const;
     bool hasPositionedObjects() const
     {
         TrackedRendererListHashSet* objects = positionedObjects();
         return objects && !objects->isEmpty();
     }
 
+    virtual bool visibleForTouchAction() const OVERRIDE FINAL { return true; }
+
     void addPercentHeightDescendant(RenderBox*);
     static void removePercentHeightDescendant(RenderBox*);
     TrackedRendererListHashSet* percentHeightDescendants() const;
     static bool hasPercentHeightContainerMap();
     static bool hasPercentHeightDescendant(RenderBox*);
     static void clearPercentHeightDescendantsFrom(RenderBox*);
     static void removePercentHeightDescendantIfNeeded(RenderBox*);
 
     void setHasMarkupTruncation(bool b) { m_hasMarkupTruncation = b; }
     bool hasMarkupTruncation() const { return m_hasMarkupTruncation; }
@@ skipping 448 matching lines @@
             return false;
     }
     return true;
 }
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBlock, isRenderBlock());
 
 } // namespace WebCore
 
 #endif // RenderBlock_h