Refactor Timer classes in preparation for landing FrameTimers.

third_party/WebKit/Source/core/html/HTMLTrackElement.cpp

 /*
  * Copyright (C) 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 150 matching lines @@
         return;
 
     // 4. Run the remainder of these steps in parallel, allowing whatever caused these steps to run to continue.
     m_loadTimer.startOneShot(0, BLINK_FROM_HERE);
 
     // 5. Top: Await a stable state. The synchronous section consists of the following steps. (The steps in the
     // synchronous section are marked with [X])
     // FIXME: We use a timer to approximate a "stable state" - i.e. this is not 100% per spec.
 }
 
-void HTMLTrackElement::loadTimerFired(Timer<HTMLTrackElement>*)
+void HTMLTrackElement::loadTimerFired(TimerBase*)
 {
     DVLOG(TRACK_LOG_LEVEL) << "loadTimerFired";
 
     // 6. [X] Set the text track readiness state to loading.
     setReadyState(LOADING);
 
     // 7. [X] Let URL be the track URL of the track element.
     KURL url = getNonEmptyURLAttribute(srcAttr);
 
     // 8. [X] If the track element's parent is a media element then let CORS mode be the state of the parent media
@@ skipping 151 matching lines @@
 }
 
 DEFINE_TRACE(HTMLTrackElement)
 {
     visitor->trace(m_track);
     visitor->trace(m_loader);
     HTMLElement::trace(visitor);
 }
 
 } // namespace blink