Remove unnecessary inclusions of LayoutObject-derived headers in core/animation/

third_party/WebKit/Source/core/animation/css/CSSAnimationUpdate.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CSSAnimationUpdate_h
 #define CSSAnimationUpdate_h
 
 #include "core/animation/AnimationStack.h"
 #include "core/animation/InertEffect.h"
 #include "core/animation/Interpolation.h"
 #include "core/animation/KeyframeEffectModel.h"
 #include "core/animation/css/CSSAnimatableValueFactory.h"
 #include "core/css/CSSKeyframesRule.h"
 #include "core/css/CSSPropertyEquality.h"
-#include "core/layout/LayoutObject.h"
 #include "wtf/Allocator.h"
 #include "wtf/HashMap.h"
 #include "wtf/Vector.h"
 #include "wtf/text/AtomicString.h"
 
 namespace blink {
 
 class Animation;
 
 class NewCSSAnimation {
@@ skipping 217 matching lines @@
 
     ActiveInterpolationsMap m_activeInterpolationsForAnimations;
     ActiveInterpolationsMap m_activeInterpolationsForTransitions;
 
     friend class PendingAnimationUpdate;
 };
 
 } // namespace blink
 
 #endif