--- a/layout/svg/nsFilterInstance.h
+++ b/layout/svg/nsFilterInstance.h
@@ -114,16 +114,17 @@ public:
    *   as aFilteredFrame's bbox ('bbox' is a specific SVG term), if non-null.
    * @param aPreFilterBounds The pre-filter visual overflow rect of
    *   aFilteredFrame, if non-null.
    */
   static nsRect GetPostFilterBounds(nsIFrame *aFilteredFrame,
                                     const gfxRect *aOverrideBBox = nullptr,
                                     const nsRect *aPreFilterBounds = nullptr);
 
+private:
   /**
    * @param aTargetFrame The frame of the filtered element under consideration,
    *   may be null.
    * @param aTargetContent The filtered element itself.
    * @param aMetrics The metrics to resolve SVG lengths against.
    * @param aFilterChain The list of filters to apply.
    * @param aFilterInputIsTainted Describes whether the SourceImage / SourceAlpha
    *   input is tainted. This affects whether feDisplacementMap will respect
@@ -196,25 +197,23 @@ public:
    * Sets the aDirty outparam to the pre-filter bounds in frame space of the
    * area of mTargetFrame that is needed in order to paint the filtered output
    * for a given post-filter dirtied area. The post-filter area must have been
    * specified before calling this method by passing it as the aPostFilterDirtyRegion
    * argument to the nsFilterInstance constructor.
    */
   nsRect ComputeSourceNeededRect();
 
-
   /**
    * Returns the transform from filter space to outer-<svg> device space.
    */
   gfxMatrix GetFilterSpaceToDeviceSpaceTransform() const {
     return mFilterSpaceToDeviceSpaceTransform;
   }
 
-private:
   struct SourceInfo {
     // Specifies which parts of the source need to be rendered.
     // Set by ComputeNeededBoxes().
     nsIntRect mNeededBounds;
 
     // The surface that contains the input rendering.
     // Set by BuildSourceImage / BuildSourcePaint.
     RefPtr<SourceSurface> mSourceSurface;