From c4fb9d14c7dd67f0d6c5d658ccecf95d1e284d1b Mon Sep 17 00:00:00 2001
From: Hiroyuki Ikezoe <hikezoe@mozilla.com>
Date: Wed, 23 May 2018 18:15:12 +0900
Subject: [PATCH] Bug 1463605 - Check mMayHaveOpacityAnimation in
 nsFrame::HasOpacityInternal(). r=birtles

If the mMayHaveOpacityAnimation is false there, we don't need to check opacity
animations at all.

MozReview-Commit-ID: LTYPPXzF8V6

--HG--
extra : rebase_source : ee2c90e04003140944fb4cc255aa3c6f1c07f0b0
---
 layout/generic/nsFrame.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/layout/generic/nsFrame.cpp b/layout/generic/nsFrame.cpp
index 9705a848e9d5..863924ad6a0d 100644
--- a/layout/generic/nsFrame.cpp
+++ b/layout/generic/nsFrame.cpp
@@ -1553,6 +1553,10 @@ nsIFrame::HasOpacityInternal(float aThreshold,
     return true;
   }
 
+  if (!mMayHaveOpacityAnimation) {
+    return false;
+  }
+
   EffectSet* effects =
     aEffectSet ? aEffectSet : EffectSet::GetEffectSet(this);
   if (!effects) {