Relocate service library tests and hookup a working status file

runtime/observatory/test/native_metrics_test.dart

-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-// VMOptions=--compile-all --error_on_bad_type --error_on_bad_override --checked
-
-import 'package:observatory/service_io.dart';
-import 'package:unittest/unittest.dart';
-import 'test_helper.dart';
-
-import 'dart:profiler';
-
-void script() {
-  var counter = new Counter('a.b.c', 'description');
-  Metrics.register(counter);
-  counter.value = 1234.5;
-}
-
-var tests = [
-
-(Isolate isolate) =>
-    isolate.refreshNativeMetrics().then((Map metrics) {
-      expect(metrics.length, greaterThan(1));
-      expect(metrics.length, greaterThan(1));
-      var foundOldHeapCapacity = metrics.values.any((m) =>
-          m.name == 'heap.old.capacity');
-      expect(foundOldHeapCapacity, equals(true));
-  }),
-
-(Isolate isolate) =>
-  isolate.invokeRpc('getIsolateMetric',
-                    { 'metricId': 'metrics/native/heap.old.used' })
-      .then((ServiceMetric counter) {
-    expect(counter.type, equals('Counter'));
-    expect(counter.name, equals('heap.old.used'));
-  }),
-
-(Isolate isolate) =>
-    isolate.invokeRpc('getIsolateMetric',
-                      { 'metricId': 'metrics/native/doesnotexist' })
-          .then((DartError err) {
-    expect(err is DartError, isTrue);
-  }),
-
-];
-
-main(args) => runIsolateTests(args, tests, testeeBefore: script);