Add RAIL tracing category to Chrome tracing.

third_party/WebKit/Source/core/animation/Animation.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 973 matching lines @@
 Animation::PlayStateUpdateScope::~PlayStateUpdateScope()
 {
     AnimationPlayState oldPlayState = m_initialPlayState;
     AnimationPlayState newPlayState = m_animation->calculatePlayState();
 
     m_animation->m_playState = newPlayState;
     if (oldPlayState != newPlayState) {
         bool wasActive = oldPlayState == Pending || oldPlayState == Running;
         bool isActive = newPlayState == Pending || newPlayState == Running;
         if (!wasActive && isActive)
-            TRACE_EVENT_NESTABLE_ASYNC_BEGIN1("blink.animations,devtools.timeline,benchmark", "Animation", m_animation, "data", InspectorAnimationEvent::data(*m_animation));
+            TRACE_EVENT_NESTABLE_ASYNC_BEGIN1("blink.animations,devtools.timeline,benchmark,rail", "Animation", m_animation, "data", InspectorAnimationEvent::data(*m_animation));
         else if (wasActive && !isActive)
-            TRACE_EVENT_NESTABLE_ASYNC_END1("blink.animations,devtools.timeline,benchmark", "Animation", m_animation, "endData", InspectorAnimationStateEvent::data(*m_animation));
+            TRACE_EVENT_NESTABLE_ASYNC_END1("blink.animations,devtools.timeline,benchmark,rail", "Animation", m_animation, "endData", InspectorAnimationStateEvent::data(*m_animation));
         else
-            TRACE_EVENT_NESTABLE_ASYNC_INSTANT1("blink.animations,devtools.timeline,benchmark", "Animation", m_animation, "data", InspectorAnimationStateEvent::data(*m_animation));
+            TRACE_EVENT_NESTABLE_ASYNC_INSTANT1("blink.animations,devtools.timeline,benchmark,rail", "Animation", m_animation, "data", InspectorAnimationStateEvent::data(*m_animation));
     }
 
     // Ordering is important, the ready promise should resolve/reject before
     // the finished promise.
     if (m_animation->m_readyPromise && newPlayState != oldPlayState) {
         if (newPlayState == Idle) {
             if (m_animation->m_readyPromise->getState() == AnimationPromise::Pending) {
                 m_animation->m_readyPromise->reject(DOMException::create(AbortError));
             }
             m_animation->m_readyPromise->reset();
@@ skipping 91 matching lines @@
     visitor->trace(m_timeline);
     visitor->trace(m_pendingFinishedEvent);
     visitor->trace(m_pendingCancelledEvent);
     visitor->trace(m_finishedPromise);
     visitor->trace(m_readyPromise);
     EventTargetWithInlineData::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink