Make sure Observatory tests run for each commit. Fix broken tests.

runtime/observatory/test/coverage_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.
 
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'test_helper.dart';
 import 'dart:async';
 
 int globalVar = 100;
@@ skipping 103 matching lines @@
       // Library
       tests.add(isolate.invokeRpcNoUpgrade('getCoverage',
                                            { 'targetId': lib.id })
                 .then((Map coverage) {
                     expect(coverage['type'], equals('CodeCoverage'));
                     expect(coverage['coverage'].length, equals(3));
                     expect(normalize(coverage['coverage'][0]['hits']),
                            equals([14, 1, 15, 1, 16, 0, 18, 1,
                                    23, 1, 24, 1, 26, 0]));
                     expect(normalize(coverage['coverage'][1]['hits']).take(12),
-                           equals([32, 0, 35, 0, 36, 0, 32, 1, 35, 1, 36, 0]));
+                           equals([32, 1, 35, 1, 36, 0, 31, 1, 44, 0, 45, 0]));
                 }));
       // Script
       tests.add(cls.load().then((_) {
             return isolate.invokeRpcNoUpgrade('getCoverage',
                                               { 'targetId': cls.script.id })
                 .then((Map coverage) {
                     expect(coverage['type'], equals('CodeCoverage'));
                     expect(coverage['coverage'].length, equals(3));
                     expect(normalize(coverage['coverage'][0]['hits']),
                            equals([14, 1, 15, 1, 16, 0, 18, 1,
                                    23, 1, 24, 1, 26, 0]));
                     expect(normalize(coverage['coverage'][1]['hits']).take(12),
-                           equals([32, 0, 35, 0, 36, 0, 32, 1, 35, 1, 36, 0]));
+                           equals([32, 1, 35, 1, 36, 0, 31, 1, 44, 0, 45, 0]));
                 });
           }));
       // Isolate
       tests.add(cls.load().then((_) {
             return isolate.invokeRpcNoUpgrade('getCoverage', {})
                 .then((Map coverage) {
                     expect(coverage['type'], equals('CodeCoverage'));
                     expect(coverage['coverage'].length, greaterThan(100));
                 });
           }));
       return Future.wait(tests);
   });
 },
 
 ];
 
 main(args) => runIsolateTests(args, tests, testeeConcurrent: testFunction);