Revert mozilla-inbound to e4dd1fa6d222 for crashes and test failures on a CLOSED TREE

layout/forms/nsButtonFrameRenderer.cpp

@@ -117,18 +117,11 @@ public:
   }
   virtual void Paint(nsDisplayListBuilder* aBuilder,
                      nsRenderingContext* aCtx);
-  virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap);
   NS_DISPLAY_DECL_NAME("ButtonBorderBackground", TYPE_BUTTON_BORDER_BACKGROUND)
 private:
   nsButtonFrameRenderer* mBFR;
 };
 
-nsRect
-nsDisplayButtonBorderBackground::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
-  *aSnap = false;
-  return mFrame->GetVisualOverflowRectRelativeToSelf() + ToReferenceFrame();
-}
-
 class nsDisplayButtonForeground : public nsDisplayItem {
 public:
   nsDisplayButtonForeground(nsDisplayListBuilder* aBuilder,