Add support for compiling Dart via the FE in dart2js.

tests/compiler/dart2js/analyze_dart2js_test.dart

 // Copyright (c) 2013, 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 analyze_dart2js;
 
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/filenames.dart';
 import 'package:compiler/src/compiler.dart';
 import 'analyze_helper.dart';
 import 'related_types.dart';
 
 /**
  * Map of whitelisted warnings and errors.
  *
  * Only add a whitelisting together with a bug report to dartbug.com and add
  * the bug issue number as a comment on the whitelisting.
  *
  * Use an identifiable suffix of the file uri as key. Use a fixed substring of
  * the error/warning message in the list of whitelistings for each file.
  */
 // TODO(johnniwinther): Support canonical URIs as keys and message kinds as
 // values.
-const Map<String, List<String>> WHITE_LIST = const {};
+const Map<String, List<String>> WHITE_LIST = const {
+  "pkg/front_end/lib/src/fasta/kernel/kernel_library_builder.dart": const [
+    "The getter 'iterator' is not defined for the class 'Object'.",
+  ],
+  "pkg/front_end/lib/src/fasta/type_inference/type_schema.dart": const [
+    "The class 'UnknownType' overrides 'operator==', but not 'get hashCode'."
+  ],
+  "pkg/kernel/lib/transformations/closure/": const [
+    "Duplicated library name 'kernel.transformations.closure.converter'",
+  ],
+  "pkg/kernel/lib/transformations/closure/info.dart": const [
+    "Types 'FunctionNode' and 'FunctionDeclaration' have no common subtypes."
+  ],
+};
 
 void main() {
   var uri = currentDirectory.resolve('pkg/compiler/lib/src/dart2js.dart');
   asyncTest(() => analyze([uri], WHITE_LIST, checkResults: checkResults));
 }
 
 bool checkResults(Compiler compiler, CollectingDiagnosticHandler handler) {
   checkRelatedTypes(compiler);
   return !handler.hasHint;
 }