code: function ThreadSlice(cat, title, colorId, start, args, opt_duration,
                         opt_cpuStart, opt_cpuDuration, opt_argsStripped,
                         opt_bind_id) {
      Slice.call(this, cat, title, colorId, start, args, opt_duration,
                 opt_cpuStart, opt_cpuDuration, opt_argsStripped, opt_bind_id);
      // Do not modify this directly.
      // subSlices is configured by SliceGroup.rebuildSubRows_.
      this.subSlices = [];
    }
docs: A ThreadSlice represents an interval of time on a thread resource
  with associated nesting slice information.
  
  ThreadSlices are typically associated with a specific trace event pair on a
  specific thread.
  For example,
  TRACE_EVENT_BEGIN1("x","myArg", 7) at time=0.1ms
  TRACE_EVENT_END0()                 at time=0.3ms
  This results in a single slice from 0.1 with duration 0.2 on a
  specific thread.
  
  @constructor