Split out a RunnerSuite class.

lib/src/runner.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.
 
 library test.runner;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'backend/metadata.dart';
-import 'backend/suite.dart';
 import 'backend/test_platform.dart';
 import 'runner/application_exception.dart';
 import 'runner/configuration.dart';
 import 'runner/engine.dart';
 import 'runner/load_exception.dart';
 import 'runner/load_suite.dart';
 import 'runner/loader.dart';
 import 'runner/reporter.dart';
 import 'runner/reporter/compact.dart';
 import 'runner/reporter/expanded.dart';
+import 'runner/runner_suite.dart';
 import 'util/async_thunk.dart';
 import 'util/io.dart';
 import 'utils.dart';
 
 /// The set of platforms for which debug flags are (currently) not supported.
 final _debugUnsupportedPlatforms = new Set.from(
     [TestPlatform.vm, TestPlatform.phantomJS, TestPlatform.contentShell]);
 
 /// A class that loads and runs tests based on a [Configuration].
 ///
@@ skipping 182 matching lines @@
       _engine.run()
     ]);
     return results.last;
   }
 
   /// Pauses the engine and the reporter so that the user can set breakpoints as
   /// necessary.
   ///
   /// This is a no-op for test suites that aren't on platforms where debugging
   /// is supported.
-  Future _pause(Suite suite) async {
+  Future _pause(RunnerSuite suite) async {
     if (suite.platform == null) return;
     if (_debugUnsupportedPlatforms.contains(suite.platform)) return;
 
     try {
       _reporter.pause();
 
       var bold = _configuration.color ? '\u001b[1m' : '';
       var noColor = _configuration.color ? '\u001b[0m' : '';
       print('');
       print(wordWrap(
           "${bold}The test runner is paused.${noColor} Open the dev console in "
               "${suite.platform} and set breakpoints. Once you're finished, "
               "return to this terminal and press Enter."));
 
       // TODO(nweiz): Display something in the paused browsers indicating that
       // they're paused.
 
       await stdinLines.next;
     } finally {
       _reporter.resume();
     }
   }
 }