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Bug 916602 (Part 2) - Avoid null timestamp assertion when creating sentinel in FrameAnimator. r=tn

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This commit is contained in:
Seth Fowler 2013-09-20 14:12:10 +02:00
parent f83ddb92b3
commit 9f988a30ca
1 changed files with 7 additions and 5 deletions
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12
image/src/FrameAnimator.cpp
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@ -58,11 +58,13 @@ FrameAnimator::GetCurrentImgFrameEndTime() const
if (timeout < 0) {
// We need to return a sentinel value in this case, because our logic
// doesn't work correctly if we have a negative timeout value. The reason
// this positive infinity was chosen was because it works with the loop in
// RequestRefresh() below.
return TimeStamp() +
TimeDuration::FromMilliseconds(static_cast<double>(UINT64_MAX));
// doesn't work correctly if we have a negative timeout value. We use
// one year in the future as the sentinel because it works with the loop
// in RequestRefresh() below.
// XXX(seth): It'd be preferable to make our logic work correctly with
// negative timeouts.
return TimeStamp::NowLoRes() +
TimeDuration::FromMilliseconds(31536000.0);
}
TimeDuration durationOfTimeout =