From ef535464ab8c296f1158770c2765b0e11172d339 Mon Sep 17 00:00:00 2001
From: Robert O'Callahan <robert@ocallahan.org>
Date: Wed, 18 Mar 2009 14:13:43 +1300
Subject: [PATCH] Bug 483841. Animated background images on visibility:hidden
 elements shouldn't cause any painting. r+sr=dbaron

--HG--
extra : rebase_source : de0ca0f1c37e7a47229f69ec1b375dd5c3202bb0
---
 layout/base/nsImageLoader.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/layout/base/nsImageLoader.cpp b/layout/base/nsImageLoader.cpp
index e69479d0d80..994ae66175c 100644
--- a/layout/base/nsImageLoader.cpp
+++ b/layout/base/nsImageLoader.cpp
@@ -254,5 +254,7 @@ nsImageLoader::RedrawDirtyFrame(const nsRect* aDamageRect)
 
 #endif
 
-  mFrame->Invalidate(bounds);
+  if (mFrame->GetStyleVisibility()->IsVisible()) {
+    mFrame->Invalidate(bounds);
+  }
 }