WTF: De-specialize PtrHash<T>.

third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1433 matching lines @@
     // NB, it is illegal at this point to query an ancestor's compositing state. Some compositing
     // reasons depend on the compositing state of ancestors. So if we want a rendering context id
     // for the context root, we cannot ask for the id of its associated WebLayer now; it may not have
     // one yet. We could do a second past after doing the compositing updates to get these ids,
     // but this would actually be harmful. We do not want to attach any semantic meaning to
     // the context id other than the fact that they group a number of layers together for the
     // sake of 3d sorting. So instead we will ask the compositor to vend us an arbitrary, but
     // consistent id.
     if (PaintLayer* root = m_owningLayer.renderingContextRoot()) {
         if (Node* node = root->layoutObject()->node())
-            id = static_cast<int>(WTF::PtrHash<Node*>::hash(node));
+            id = static_cast<int>(PtrHash<Node>::hash(node));
     }
 
     UpdateRenderingContextFunctor functor = { id };
     ApplyToGraphicsLayers<UpdateRenderingContextFunctor>(this, functor, ApplyToAllGraphicsLayers);
 }
 
 struct UpdateShouldFlattenTransformFunctor {
     void operator() (GraphicsLayer* layer) const { layer->setShouldFlattenTransform(shouldFlatten); }
     bool shouldFlatten;
 };
@@ skipping 1078 matching lines @@
     } else if (graphicsLayer == m_scrollingContentsLayer.get()) {
         name = "Scrolling Contents Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink