HashTraits<RefPtr<P> >::PeekType should be raw pointer for better performance

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

Index: Source/core/svg/graphics/filters/SVGFilterBuilder.cpp
diff --git a/Source/core/svg/graphics/filters/SVGFilterBuilder.cpp b/Source/core/svg/graphics/filters/SVGFilterBuilder.cpp
index 96f8d567759d4b5fc07e7ac7a52503b7078bad7b..5c731f2057ffc8f3abcf7be0dd6562b653cb5962 100644
--- a/Source/core/svg/graphics/filters/SVGFilterBuilder.cpp
+++ b/Source/core/svg/graphics/filters/SVGFilterBuilder.cpp
@@ -57,13 +57,13 @@ FilterEffect* SVGFilterBuilder::getEffectById(const AtomicString& id) const
         if (m_lastEffect)
             return m_lastEffect.get();
 
-        return m_builtinEffects.get(SourceGraphic::effectName()).get();
+        return m_builtinEffects.get(SourceGraphic::effectName());
     }
 
     if (m_builtinEffects.contains(id))
-        return m_builtinEffects.get(id).get();
+        return m_builtinEffects.get(id);
 
-    return m_namedEffects.get(id).get();
+    return m_namedEffects.get(id);
 }
 
 void SVGFilterBuilder::appendEffectToEffectReferences(PassRefPtr<FilterEffect> prpEffect, RenderObject* object)