anchor.diff:        ..layoutVertical()
         ..flex()
         ..add([
  -        _cpuProfiler = _CpuProfiler(
  -          _timelineController,
  -          () => _timelineController.timeline.data?.cpuProfileData,
  -        )..hidden(true),
  +        _cpuProfiler,
           // TODO(kenz): eventually we should show something in this area that
           // is useful for GPU events as well (tips, links to docs, etc).
           _eventSummary = HtmlEventSummary(
  
positive.code:         third: CpuProfilerViewType.bottomUp,
        ),
      );
      _summaryTabNav = PTabNav([PTabNavTab('Summary')])
        ..element.style.borderBottom = '0'
        ..hidden(true);
  
negative.code:       ..color = colorToCss(titleTextColor)
        ..backgroundColor = colorToCss(titleBackgroundColor);
  
      _cpuProfiler = _CpuProfiler(
        _timelineController,
        () => _timelineController.timeline.data?.cpuProfileData,
      )..hidden(true);
  
      _cpuProfilerTabNav = HtmlCpuProfilerTabNav(
        _cpuProfiler,
        CpuProfilerTabOrder(
  