From 094dfdd361057f5e9cc6661af6e58cc2843f5a14 Mon Sep 17 00:00:00 2001
From: Jan-Ivar Bruaroey <jib@mozilla.com>
Date: Thu, 29 Oct 2015 02:48:19 -0400
Subject: [PATCH] Bug 1193075 - make { scrollWithPage: false } not scroll with
 page. r=jesup

--HG--
extra : transplant_source : %3FE%94%C1%9C%A1%AE%FFJ%81J4%B6%16%BFodY%1F%C8
---
 dom/media/webrtc/MediaEngineTabVideoSource.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dom/media/webrtc/MediaEngineTabVideoSource.cpp b/dom/media/webrtc/MediaEngineTabVideoSource.cpp
index 4551418a3548..984c446f597f 100644
--- a/dom/media/webrtc/MediaEngineTabVideoSource.cpp
+++ b/dom/media/webrtc/MediaEngineTabVideoSource.cpp
@@ -270,7 +270,8 @@ MediaEngineTabVideoSource::Draw() {
 
   nscolor bgColor = NS_RGB(255, 255, 255);
   uint32_t renderDocFlags = mScrollWithPage? 0 :
-                            nsIPresShell::RENDER_IGNORE_VIEWPORT_SCROLLING;
+      (nsIPresShell::RENDER_IGNORE_VIEWPORT_SCROLLING |
+       nsIPresShell::RENDER_DOCUMENT_RELATIVE);
   nsRect r(nsPresContext::CSSPixelsToAppUnits((float)mViewportOffsetX),
            nsPresContext::CSSPixelsToAppUnits((float)mViewportOffsetY),
            nsPresContext::CSSPixelsToAppUnits((float)mViewportWidth),