Clean up the getLayoutSVGResource*ById helpers

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 95 matching lines @@
   // crawls.
   unsigned m_invalidationMask : 8;
 
   unsigned m_registered : 1;
   unsigned m_isInvalidating : 1;
   // 22 padding bits available
 
   HashSet<LayoutObject*> m_clients;
 };
 
-inline LayoutSVGResourceContainer* getLayoutSVGResourceContainerById(
-    TreeScope& treeScope,
-    const AtomicString& id) {
-  if (id.isEmpty())
-    return nullptr;
-
-  if (LayoutSVGResourceContainer* layoutResource =
-          treeScope.ensureSVGTreeScopedResources().resourceById(id))
-    return layoutResource;
-
-  return nullptr;
-}
-
 template <typename Layout>
-Layout* getLayoutSVGResourceById(TreeScope& treeScope, const AtomicString& id) {
+Layout* getLayoutSVGResourceById(SVGTreeScopeResources& treeScopeResources,
+                                 const AtomicString& id) {
   if (LayoutSVGResourceContainer* container =
-          getLayoutSVGResourceContainerById(treeScope, id)) {
+          treeScopeResources.resourceById(id)) {
     if (container->resourceType() == Layout::s_resourceType)
       return static_cast<Layout*>(container);
   }
   return nullptr;
 }
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGResourceContainer,
                                 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