Remove Compiler.assembledCode.

tests/compiler/dart2js/output_collector.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.
+
+// Output provider that collects the output in string buffers.
+
+library output_collector;
+
+import 'dart:async';
+
+class BufferedEventSink implements EventSink<String> {
+  StringBuffer sb = new StringBuffer();
+  String text;
+
+  void add(String event) {
+    sb.write(event);
+  }
+
+  void addError(errorEvent, [StackTrace stackTrace]) {
+    // Do not support this.
+  }
+
+  void close() {
+    text = sb.toString();
+    sb = null;
+  }
+}
+
+class OutputCollector {
+  Map<String, Map<String, BufferedEventSink>> outputMap = {};
+
+  EventSink<String> call(String name, String extension) {
+    Map<String, BufferedEventSink> sinkMap =
+        outputMap.putIfAbsent(extension, () => {});
+    return sinkMap.putIfAbsent(name, () => new BufferedEventSink());
+  }
+
+  String getOutput(String name, String extension) {
+    Map<String, BufferedEventSink> sinkMap = outputMap[extension];
+    if (sinkMap == null) return null;
+    BufferedEventSink sink = sinkMap[name];
+    return sink != null ? sink.text : null;
+  }
+}