re-enable css animations

patches/no-css-animations.patch

@@ -1,32 +0,0 @@
-diff --git a/dom/animation/AnimationEffect.cpp b/dom/animation/AnimationEffect.cpp
-index 6ef8c30d49..07cad770c9 100644
---- a/dom/animation/AnimationEffect.cpp
-+++ b/dom/animation/AnimationEffect.cpp
-@@ -108,10 +108,18 @@ ComputedTiming AnimationEffect::GetComputedTimingAt(
-   // Always return the same object to benefit from return-value optimization.
-   ComputedTiming result;
- 
-+  result.mActiveDuration = aTiming.ActiveDuration();
-   if (aTiming.Duration()) {
-     MOZ_ASSERT(aTiming.Duration().ref() >= zeroDuration,
-                "Iteration duration should be positive");
--    result.mDuration = aTiming.Duration().ref();
-+    if (result.mActiveDuration != StickyTimeDuration::Forever()) {
-+      // On css animations with finite duration, set the duration & active duration to 0
-+      result.mDuration = zeroDuration;
-+      result.mActiveDuration = zeroDuration;
-+    } else {
-+      // On infinite-running animations, use the default duration
-+      result.mDuration = aTiming.Duration().ref();
-+    }
-   }
- 
-   MOZ_ASSERT(aTiming.Iterations() >= 0.0 && !std::isnan(aTiming.Iterations()),
-@@ -124,7 +132,6 @@ ComputedTiming AnimationEffect::GetComputedTimingAt(
-              "ValidateIterationStart");
-   result.mIterationStart = aTiming.IterationStart();
- 
--  result.mActiveDuration = aTiming.ActiveDuration();
-   result.mEndTime = aTiming.EndTime();
-   result.mFill = aTiming.Fill() == dom::FillMode::Auto ? dom::FillMode::None
-                                                        : aTiming.Fill();