Roll Observatory deps (charted -> ^0.3.0)

packages/usage/test/hit_types_test.dart

 // Copyright (c) 2014, 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.
 
 library usage.hit_types_test;
 
 import 'dart:async';
 
+import 'package:test/test.dart';
 import 'package:usage/usage.dart';
-import 'package:unittest/unittest.dart';
 
 import 'src/common.dart';
 
+main() => defineTests();
+
 void defineTests() {
   group('screenView', () {
     test('simple', () {
       AnalyticsImplMock mock = createMock();
       mock.sendScreenView('main');
       expect(mock.mockProperties['clientId'], isNotNull);
       expect(mock.mockPostHandler.sentValues, isNot(isEmpty));
     });
   });
 
@@ skipping 50 matching lines @@
       has(mock.last, 'utt');
       has(mock.last, 'utc');
       has(mock.last, 'utl');
     });
 
     test('timer', () {
       AnalyticsImplMock mock = createMock();
       AnalyticsTimer timer =
           mock.startTimer('compile', category: 'Build', label: 'Compile');
 
-      int time;
-
       return new Future.delayed(new Duration(milliseconds: 20), () {
         return timer.finish().then((_) {
           expect(mock.mockPostHandler.sentValues, isNot(isEmpty));
           was(mock.last, 'timing');
           has(mock.last, 'utv');
           has(mock.last, 'utt');
           has(mock.last, 'utc');
           has(mock.last, 'utl');
           int time = timer.currentElapsedMillis;
           expect(time, greaterThan(10));
@@ skipping 30 matching lines @@
     });
 
     test('long description trimmed', () {
       String str = '0123456789abcdefghijklmnopqrstuvwxyz';
       AnalyticsImplMock mock = createMock();
       mock.sendException(str + str + str + str + str);
       expect(mock.last['exd'].length, 100);
     });
   });
 }