Generate dart2js and analyzer files for shared messages.

pkg/compiler/lib/src/diagnostics/generated/shared_messages.dart

+/*
+DON'T EDIT. GENERATED. DON'T EDIT.
+This file has been generated by 'publish.dart' in the dart_messages package.
+
+Messages are maintained in `lib/shared_messages.dart` of that same package.
+After any change to that file, run `bin/publish.dart` to generate a new version
+of the json, dart2js and analyzer representations.
+*/
+// 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 '../messages.dart' show MessageTemplate;
+
+enum SharedMessageKind {
+  exampleMessage
+}
+
+const Map<SharedMessageKind, MessageTemplate> TEMPLATES = const <SharedMessageKind, MessageTemplate>{ 
+  SharedMessageKind.exampleMessage: const MessageTemplate(
+    SharedMessageKind.exampleMessage,
+    "#use #named #arguments",
+    examples: const [
+      r'''
+      Some multiline example;
+      That generates the bug.''',
+      const {
+      'fileA.dart': r'''
+        or a map from file to content.
+        again multiline''',
+      'fileB.dart': r'''
+        with possibly multiple files.
+        muliline too''',
+      },
+    ]
+  ),  // Generated. Don't edit.
+};