--- a/layout/style/nsComputedDOMStyle.h
+++ b/layout/style/nsComputedDOMStyle.h
@@ -10,25 +10,25 @@
 #define nsComputedDOMStyle_h__
 
 #include "mozilla/ArenaRefPtr.h"
 #include "mozilla/ArenaRefPtrInlines.h"
 #include "mozilla/Attributes.h"
 #include "mozilla/StyleComplexColor.h"
 #include "mozilla/UniquePtr.h"
 #include "nsCOMPtr.h"
+#include "nsContentUtils.h"
 #include "nscore.h"
 #include "nsCSSProps.h"
 #include "nsDOMCSSDeclaration.h"
 #include "mozilla/ComputedStyle.h"
 #include "nsIWeakReferenceUtils.h"
 #include "mozilla/gfx/Types.h"
 #include "nsCoord.h"
 #include "nsColor.h"
-#include "nsIContent.h"
 #include "nsStyleStruct.h"
 #include "mozilla/WritingModes.h"
 
 namespace mozilla {
 namespace dom {
 class DocGroup;
 class Element;
 } // namespace dom
@@ -102,17 +102,17 @@ public:
 
   static already_AddRefed<mozilla::ComputedStyle>
   GetComputedStyleNoFlush(mozilla::dom::Element* aElement,
                           nsAtom* aPseudo,
                           StyleType aStyleType = eAll)
   {
     return DoGetComputedStyleNoFlush(aElement,
                                      aPseudo,
-                                     aElement->OwnerDoc()->GetShell(),
+                                     nsContentUtils::GetPresShellForContent(aElement),
                                      aStyleType);
   }
 
   static already_AddRefed<mozilla::ComputedStyle>
   GetUnanimatedComputedStyleNoFlush(mozilla::dom::Element* aElement,
                                     nsAtom* aPseudo);
 
   // Helper for nsDOMWindowUtils::GetVisitedDependentComputedStyle