Remove global set of ScopedStyleResolvers.

sky/engine/core/animation/css/CSSAnimations.cpp

Index: sky/engine/core/animation/css/CSSAnimations.cpp
diff --git a/sky/engine/core/animation/css/CSSAnimations.cpp b/sky/engine/core/animation/css/CSSAnimations.cpp
index 1d5424716440eabc4168ae5a5c6dc32144daf74e..997f5bb2d3e5880ec9ad1d118b4bb05ffc1c13a8 100644
--- a/sky/engine/core/animation/css/CSSAnimations.cpp
+++ b/sky/engine/core/animation/css/CSSAnimations.cpp
@@ -196,9 +196,6 @@ static void resolveKeyframes(StyleResolver* resolver, Element* element, const El
 const StyleRuleKeyframes* CSSAnimations::matchScopedKeyframesRule(StyleResolver* resolver, const Element* element, const StringImpl* animationName)
 {
     // FIXME: This is all implementation detail of style resolver, CSSAnimations shouldn't be reaching into any of it.
-    if (resolver->document().styleEngine()->hasOnlyScopedResolverForDocument())
-        return element->document().scopedStyleResolver()->keyframeStylesForAnimation(animationName);
-
     Vector<RawPtr<ScopedStyleResolver>, 8> stack;
     resolver->styleTreeResolveScopedKeyframesRules(element, stack);
     if (stack.isEmpty())