Small size reduction

[demike]

removing angular and angular.perf + using 'perf_api.Profiler' instead of 'perf_api' reduces
the size a little bit while keeping the app working.
This results in 177.5KB minified and gzipped.

@MirrorsUsed(targets: const[
   'angular.core',
   'angular.core.dom',
   'angular.filter',
   'angular.directive',
   'angular.routing',
   'angular.core.parser',
   'perf_api.Profiler',
   'NodeTreeSanitizer'
   ],
   override: '*')