--- a/layout/printing/nsPrintObject.cpp
+++ b/layout/printing/nsPrintObject.cpp
@@ -15,17 +15,17 @@
 #include "nsIBaseWindow.h"
                                                    
 //---------------------------------------------------
 //-- nsPrintObject Class Impl
 //---------------------------------------------------
 nsPrintObject::nsPrintObject() :
   mContent(nullptr), mFrameType(eFrame), mParent(nullptr),
   mHasBeenPrinted(false), mDontPrint(true), mPrintAsIs(false),
-  mSharedPresShell(false), mInvisible(false), mDidCreateDocShell(false),
+  mInvisible(false), mDidCreateDocShell(false),
   mShrinkRatio(1.0), mZoomRatio(1.0)
 {
   MOZ_COUNT_CTOR(nsPrintObject);
 }
 
 
 nsPrintObject::~nsPrintObject()
 {

--- a/layout/printing/nsPrintObject.h
+++ b/layout/printing/nsPrintObject.h
@@ -51,17 +51,16 @@ public:
   nsCOMPtr<nsIContent>     mContent;
   PrintObjectType  mFrameType;
   
   nsTArray<nsPrintObject*> mKids;
   nsPrintObject*   mParent;
   bool             mHasBeenPrinted;
   bool             mDontPrint;
   bool             mPrintAsIs;
-  bool             mSharedPresShell;
   bool             mInvisible;        // Indicates PO is set to not visible by CSS
   bool             mPrintPreview;
   bool             mDidCreateDocShell;
   float            mShrinkRatio;
   float            mZoomRatio;
 
 private:
   nsPrintObject& operator=(const nsPrintObject& aOther) MOZ_DELETE;