Bug 1148833 part 3 - Remove nsIFrame::WillReflow and add a non-virtual MarkInReflow method instead that sets NS_FRAME_IN_REFLOW. Call it at the start of Reflow(). r=roc

layout/forms/nsHTMLButtonControlFrame.cpp

@@ -184,6 +184,7 @@ nsHTMLButtonControlFrame::Reflow(nsPresContext* aPresContext,
                                const nsHTMLReflowState& aReflowState,
                                nsReflowStatus& aStatus)
 {
+  MarkInReflow();
   DO_GLOBAL_REFLOW_COUNT("nsHTMLButtonControlFrame");
   DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);