Unify and provide one IsGarbageCollectedType<T> implementation.

third_party/WebKit/Source/core/svg/graphics/filters/SVGFilterBuilder.cpp

 /*
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  *
  * 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 46 matching lines @@
 
     static const AtomicString& strokePaint()
     {
         DEFINE_STATIC_LOCAL(const AtomicString, s_strokePaintName, ("StrokePaint"));
         return s_strokePaintName;
     }
 };
 
 } // namespace
 
+SVGFilterGraphNodeMap::SVGFilterGraphNodeMap()
+{
+}
+
 void SVGFilterGraphNodeMap::addBuiltinEffect(FilterEffect* effect)
 {
     m_effectReferences.add(effect, FilterEffectSet());
 }
 
 void SVGFilterGraphNodeMap::addPrimitive(LayoutObject* object, FilterEffect* effect)
 {
     // The effect must be a newly created filter effect.
     ASSERT(!m_effectReferences.contains(effect));
     ASSERT(!object || !m_effectRenderer.contains(object));
@@ skipping 128 matching lines @@
             return namedEffect;
     }
 
     if (m_lastEffect)
         return m_lastEffect.get();
 
     return m_builtinEffects.get(FilterInputKeywords::getSourceGraphic());
 }
 
 } // namespace blink