Add a platform plugin infrastructure.

lib/src/runner/runner_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:stream_channel/stream_channel.dart';
 
-import '../../backend/group.dart';
-import '../../backend/live_test.dart';
-import '../../backend/live_test_controller.dart';
-import '../../backend/metadata.dart';
-import '../../backend/operating_system.dart';
-import '../../backend/state.dart';
-import '../../backend/suite.dart';
-import '../../backend/test.dart';
-import '../../backend/test_platform.dart';
-import '../../utils.dart';
-import '../../util/remote_exception.dart';
-import '../../util/stack_trace_mapper.dart';
+import '../backend/group.dart';
+import '../backend/live_test.dart';
+import '../backend/live_test_controller.dart';
+import '../backend/metadata.dart';
+import '../backend/operating_system.dart';
+import '../backend/state.dart';
+import '../backend/suite.dart';
+import '../backend/test.dart';
+import '../backend/test_platform.dart';
+import '../utils.dart';
+import '../util/remote_exception.dart';
 
-/// A test in a running iframe.
-class IframeTest extends Test {
+/// A test running remotely, controlled by a stream channel.
+class RunnerTest extends Test {
   final String name;
   final Metadata metadata;
 
-  /// The mapper used to map stack traces for errors coming from this test, or
-  /// `null`.
-  final StackTraceMapper _mapper;
-
   /// The channel used to communicate with the test's [IframeListener].
   final MultiChannel _channel;
 
-  IframeTest(this.name, this.metadata, this._channel, {StackTraceMapper mapper})
-      : _mapper = mapper;
+  RunnerTest(this.name, this.metadata, this._channel);
 
   LiveTest load(Suite suite, {Iterable<Group> groups}) {
     var controller;
     var testChannel;
     controller = new LiveTestController(suite, this, () {
       controller.setState(const State(Status.running, Result.success));
 
       testChannel = _channel.virtualChannel();
       _channel.sink.add({
         'command': 'run',
         'channel': testChannel.id
       });
 
       testChannel.stream.listen((message) {
         if (message['type'] == 'error') {
           var asyncError = RemoteException.deserialize(message['error']);
 
           var stackTrace = asyncError.stackTrace;
-          if (_mapper != null) stackTrace = _mapper.mapStackTrace(stackTrace);
-
           controller.addError(asyncError.error, stackTrace);
         } else if (message['type'] == 'state-change') {
           controller.setState(
               new State(
                   new Status.parse(message['status']),
                   new Result.parse(message['result'])));
         } else if (message['type'] == 'print') {
           controller.print(message['line']);
         } else {
           assert(message['type'] == 'complete');
@@ skipping 19 matching lines @@
         testChannel.sink.add({'command': 'close'});
         await controller.completer.future;
         testChannel.sink.close();
       });
     }, groups: groups);
     return controller.liveTest;
   }
 
   Test forPlatform(TestPlatform platform, {OperatingSystem os}) {
     if (!metadata.testOn.evaluate(platform, os: os)) return null;
-    return new IframeTest(
-        name, metadata.forPlatform(platform, os: os), _channel,
-        mapper: _mapper);
+    return new RunnerTest(
+        name, metadata.forPlatform(platform, os: os), _channel);
   }
 }