Merge from Chromium at DEPS revision 222756

This commit was generated by merge_to_master.py.

Change-Id: I085d892f6f1583a45f10eb394f195bbea5a334ef
diff --git a/Source/core/svg/SVGAnimationElement.h b/Source/core/svg/SVGAnimationElement.h
index a2d9ac4..11410e1 100644
--- a/Source/core/svg/SVGAnimationElement.h
+++ b/Source/core/svg/SVGAnimationElement.h
@@ -162,7 +162,7 @@
     }
 
 protected:
-    SVGAnimationElement(const QualifiedName&, Document*);
+    SVGAnimationElement(const QualifiedName&, Document&);
 
     void computeCSSPropertyValue(SVGElement*, CSSPropertyID, String& value);
     virtual void determinePropertyValueTypes(const String& from, const String& to);