Fix up that no render SVG shape when change clip-path to visible after hidden.

third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.h

 /*
  * Copyright (C) Research In Motion Limited 2010. 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 53 matching lines @@
 
   void idChanged();
 
   void invalidateCacheAndMarkForLayout(SubtreeLayoutScope* = nullptr);
 
   static void markForLayoutAndParentResourceInvalidation(
       LayoutObject*,
       bool needsLayout = true);
 
   void clearInvalidationMask() { m_invalidationMask = 0; }
+  const HashSet<LayoutObject*>& clients() { return m_clients; }
 
  protected:
   // When adding modes, make sure we don't overflow m_invalidationMask below.
   enum InvalidationMode {
     LayoutAndBoundariesInvalidation = 1 << 0,
     BoundariesInvalidation = 1 << 1,
     PaintInvalidation = 1 << 2,
     ParentOnlyInvalidation = 1 << 3
   };
 
@@ skipping 56 matching lines @@
                                 isSVGResourceContainer());
 
 #define DEFINE_LAYOUT_SVG_RESOURCE_TYPE_CASTS(thisType, typeName)   \
   DEFINE_TYPE_CASTS(thisType, LayoutSVGResourceContainer, resource, \
                     resource->resourceType() == typeName,           \
                     resource.resourceType() == typeName)
 
 }  // namespace blink
 
 #endif