DevTools: remove most convenience wrappers from WI.TimelineModel.Record

Source/devtools/front_end/timeline/TimelinePresentationModel.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 459 matching lines @@
     {
         return this._record.endTime();
     },
 
     /**
      * @override
      * @return {number}
      */
     selfTime: function()
     {
-        return this._record.selfTime();
+        return this._record.traceEvent().selfTime;
     },
 
     /**
      * @override
      * @return {!WebInspector.TimelineModel.Record}
      */
     record: function()
     {
         return this._record;
     },
 
     /**
      * @override
      * @return {boolean}
      */
     hasWarnings: function()
     {
-        return !!this._record.warnings();
+        return !!this._record.traceEvent().warning;
     },
 
     __proto__: WebInspector.TimelinePresentationModel.Record.prototype
 }
 
 /**
  * @constructor
  * @extends {WebInspector.TimelinePresentationModel.Record}
  * @param {!WebInspector.TimelineModel.Record} record
  */
@@ skipping 76 matching lines @@
      * @override
      * @return {boolean}
      */
     hasWarnings: function()
     {
         return false;
     },
 
     __proto__: WebInspector.TimelinePresentationModel.Record.prototype
 }