From 42bec44399be3ef1eded833d060a00cdb9c98375 Mon Sep 17 00:00:00 2001
From: "L. David Baron" <dbaron@dbaron.org>
Date: Wed, 31 Jan 2018 07:18:49 +0000
Subject: [PATCH] Bug 1432341 - Simplify by using GetContentRectRelativeToSelf.
  r=mattwoodrow

This is just cleanup in advance of the patch to fix this bug.

MozReview-Commit-ID: 1pzauGix51m

--HG--
extra : rebase_source : b36a4ef7da6fb6b6ef7a1a82c56aa489e10935d5
---
 layout/generic/nsColumnSetFrame.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/layout/generic/nsColumnSetFrame.cpp b/layout/generic/nsColumnSetFrame.cpp
index bce01699b09c..34f6b7005c99 100644
--- a/layout/generic/nsColumnSetFrame.cpp
+++ b/layout/generic/nsColumnSetFrame.cpp
@@ -167,9 +167,7 @@ nsColumnSetFrame::ForEachColumn(const std::function<void(const nsRect& lineRect)
   bool isVertical = wm.IsVertical();
   bool isRTL = !wm.IsBidiLTR();
 
-  // Get our content rect as an absolute coordinate, not relative to
-  // our parent (which is what the X and Y normally is)
-  nsRect contentRect = GetContentRect() - GetRect().TopLeft() + aPt;
+  nsRect contentRect = GetContentRectRelativeToSelf() + aPt;
   nsSize ruleSize = isVertical ? nsSize(contentRect.width, ruleWidth)
                                : nsSize(ruleWidth, contentRect.height);