lib/third_party/tracing/model/event_container.js
function EventContainer() {
    this.guid_ = tr.b.GUID.allocate();
    this.important = true;
    this.bounds_ = new tr.b.Range();
  }
function EventContainer() {
    this.guid_ = tr.b.GUID.allocate();
    this.important = true;
    this.bounds_ = new tr.b.Range();
  }
function EventContainer ( ) { this . guid_ = tr . b . GUID . allocate ( ) ; this . important = true ; this . bounds_ = new tr . b . Range ( ) ; }
EventContainer is a base class for any class in the trace model that
contains child events or child EventContainers.

For all EventContainers, updateBounds() must be called after modifying the
container's events if an up-to-date bounds is expected.

@constructor
EventContainer is a base class for any class in the trace model that contains child events or child EventContainers .