Revert of Devtools Animations: Represent delay and end-delay on the animation timeline

Source/core/inspector/InspectorAnimationAgent.cpp

 // Copyright 2014 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.
 
 #include "config.h"
 
 #include "core/inspector/InspectorAnimationAgent.h"
 
 #include "core/animation/Animation.h"
 #include "core/animation/AnimationEffect.h"
@@ skipping 76 matching lines @@
             delay = keyframes.at(1)->offset() * duration;
             duration -= delay;
             easing = keyframes.at(1)->easing().toString();
         } else {
             easing = keyframes.at(0)->easing().toString();
         }
     }
 
     RefPtr<TypeBuilder::Animation::AnimationNode> animationObject = TypeBuilder::Animation::AnimationNode::create()
         .setDelay(delay)
-        .setEndDelay(computedTiming.endDelay())
         .setPlaybackRate(computedTiming.playbackRate())
         .setIterationStart(computedTiming.iterationStart())
         .setIterations(computedTiming.iterations())
         .setDuration(duration)
         .setDirection(computedTiming.direction())
         .setFill(computedTiming.fill())
         .setName(animation->name())
         .setBackendNodeId(InspectorNodeIds::idForNode(animation->target()))
         .setEasing(easing);
     return animationObject.release();
@@ skipping 183 matching lines @@
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_pageAgent);
     visitor->trace(m_domAgent);
     visitor->trace(m_idToAnimationPlayer);
 #endif
     InspectorBaseAgent::trace(visitor);
 }
 
 }