Devtools Animations: Display keyframes for CSS Animations in inspector

Source/core/animation/css/CSSAnimations.cpp

 /*
  * 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 204 matching lines @@
         if (const StyleRuleKeyframes* keyframesRule = stack.at(i)->keyframeStylesForAnimation(animationName))
             return keyframesRule;
     }
     return 0;
 }
 
 CSSAnimations::CSSAnimations()
 {
 }
 
+const AtomicString CSSAnimations::getAnimationNameForInspector(const AnimationPlayer& player)
+{
+    for (const auto& it : m_animations) {
+        if (it.value->sequenceNumber() == player.sequenceNumber())
+            return it.key;
+    }
+    return nullAtom;
+}
+
 PassOwnPtrWillBeRawPtr<CSSAnimationUpdate> CSSAnimations::calculateUpdate(const Element* animatingElement, Element& element, const RenderStyle& style, RenderStyle* parentStyle, StyleResolver* resolver)
 {
     OwnPtrWillBeRawPtr<CSSAnimationUpdate> update = adoptPtrWillBeNoop(new CSSAnimationUpdate());
     calculateAnimationUpdate(update.get(), animatingElement, element, style, parentStyle, resolver);
     calculateAnimationActiveInterpolations(update.get(), animatingElement, element.document().timeline().currentTimeInternal());
     calculateTransitionUpdate(update.get(), animatingElement, style);
     calculateTransitionActiveInterpolations(update.get(), animatingElement, element.document().timeline().currentTimeInternal());
     return update->isEmpty() ? nullptr : update.release();
 }
 
@@ skipping 496 matching lines @@
 #if ENABLE(OILPAN)
     visitor->trace(m_newTransitions);
     visitor->trace(m_activeInterpolationsForAnimations);
     visitor->trace(m_activeInterpolationsForTransitions);
     visitor->trace(m_newAnimations);
     visitor->trace(m_cancelledAnimationPlayers);
 #endif
 }
 
 } // namespace blink