Resolve promises synchronously sometimes

third_party/WebKit/Source/core/animation/Animation.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 219 matching lines @@
   void AttachCompositedLayers();
   void DetachCompositedLayers();
   // CompositorAnimationDelegate implementation.
   void NotifyAnimationStarted(double monotonic_time, int group) override;
   void NotifyAnimationFinished(double monotonic_time, int group) override {}
   void NotifyAnimationAborted(double monotonic_time, int group) override {}
 
   using AnimationPromise = ScriptPromiseProperty<Member<Animation>,
                                                  Member<Animation>,
                                                  Member<DOMException>>;
-  void ResolvePromiseAsync(AnimationPromise*);
+  void ResolvePromiseMaybeAsync(AnimationPromise*);
 
   String id_;
 
   AnimationPlayState play_state_;
   double playback_rate_;
   double start_time_;
   double hold_time_;
 
   unsigned sequence_number_;
 
@@ skipping 100 matching lines @@
 
   bool current_time_pending_;
   bool state_is_being_updated_;
 
   bool effect_suppressed_;
 };
 
 }  // namespace blink
 
 #endif  // Animation_h