Enable strict flags for all service tests

runtime/observatory/test/command_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 'dart:async';
 
 import 'package:observatory/cli.dart';
 import 'package:unittest/unittest.dart';
 
 class TestCommand extends Command {
   TestCommand(this.out, name, children) : super(name, children);
   StringBuffer out;
 
@@ skipping 42 matching lines @@
 
   // Substring completion.
   cmd.completeCommand('al').then((result) {
     expect(result, equals(['alpha ']));
   });
 
   // Full string completion.
   cmd.completeCommand('alpha').then((result) {
     expect(result, equals(['alpha ']));
   });
-                      
+
   // Extra space, no subcommands.
   cmd.completeCommand('alpha ').then((result) {
     expect(result, equals(['alpha ']));
   });
 
   // Ambiguous completion.
   cmd.completeCommand('g').then((result) {
     expect(result, equals(['game ', 'gamera ']));
   });
 
@@ skipping 84 matching lines @@
 }
 
 void testCommandRunSubcommand() {
   // Run a simple command.
   StringBuffer out = new StringBuffer();
   RootCommand cmd =
       new RootCommand([
           new TestCommand(out, 'alpha', [
               new TestCommand(out, 'beta', []),
               new TestCommand(out, 'gamma', [])])]);
-      
+
   cmd.runCommand('a b').then(expectAsync((_) {
       expect(out.toString(), equals('executing beta([])\n'));
       out.clear();
       cmd.runCommand('alpha g ').then(expectAsync((_) {
           expect(out.toString(), equals('executing gamma([])\n'));
       }));
   }));
 }
 
 void testCommandRunNotFound() {
@@ skipping 36 matching lines @@
 
 main() {
   test('command completion test suite', testCommandComplete);
   test('run a simple command', testCommandRunSimple);
   test('run a subcommand', testCommandRunSubcommand);
   test('run a command which is not found', testCommandRunNotFound);
   test('run a command which is ambiguous', testCommandRunAmbiguous);
   test('run a command using an alias', testCommandRunAlias);
 }