Make PropertyHandle::svgAttribute() return a reference

third_party/WebKit/Source/core/animation/PropertyHandle.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PropertyHandle_h
 #define PropertyHandle_h
 
 #include "core/CSSPropertyNames.h"
 #include "core/CoreExport.h"
 #include "core/dom/QualifiedName.h"
@@ skipping 19 matching lines @@
 
     bool operator==(const PropertyHandle&) const;
     bool operator!=(const PropertyHandle& other) const { return !(*this == other); }
 
     unsigned hash() const;
 
     bool isCSSProperty() const { return handleType == HandleCSSProperty; }
     CSSPropertyID cssProperty() const { ASSERT(isCSSProperty()); return property; }
 
     bool isSVGAttribute() const { return handleType == HandleSVGAttribute; }
-    const QualifiedName* svgAttribute() const { ASSERT(isSVGAttribute()); return attribute; }
+    const QualifiedName& svgAttribute() const { ASSERT(isSVGAttribute()); return *attribute; }
 
 private:
     enum HandleType {
         HandleEmptyValueForHashTraits,
         HandleDeletedValueForHashTraits,
         HandleCSSProperty,
         HandleSVGAttribute,
     };
 
     explicit PropertyHandle(HandleType handleType)
@@ skipping 45 matching lines @@
 
     static blink::PropertyHandle emptyValue()
     {
         return blink::PropertyHandle::emptyValueForHashTraits();
     }
 };
 
 } // namespace WTF
 
 #endif // PropertyHandle_h