Support loading binary data in dart2js

pkg/compiler/lib/src/diagnostics/messages.dart

 // Copyright (c) 2011, 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.
 
 /// The messages in this file should follow the [Guide for Writing
 /// Diagnostics](../../../../front_end/lib/src/fasta/diagnostics.md).
 ///
 /// Other things to keep in mind:
 ///
 /// An INFO message should always be preceded by a non-INFO message, and the
@@ skipping 331 matching lines @@
   POSITIONAL_PARAMETER_WITH_EQUALS,
   POTENTIAL_MUTATION,
   POTENTIAL_MUTATION_HERE,
   POTENTIAL_MUTATION_IN_CLOSURE,
   POTENTIAL_MUTATION_IN_CLOSURE_HERE,
   PREAMBLE,
   PREFIX_AS_EXPRESSION,
   PRIVATE_ACCESS,
   PRIVATE_IDENTIFIER,
   PRIVATE_NAMED_PARAMETER,
-  READ_SCRIPT_ERROR,
+  READ_URI_ERROR,
   READ_SELF_ERROR,
   REDIRECTING_CONSTRUCTOR_CYCLE,
   REDIRECTING_CONSTRUCTOR_HAS_BODY,
   REDIRECTING_CONSTRUCTOR_HAS_INITIALIZER,
   REDIRECTING_FACTORY_WITH_DEFAULT,
   REFERENCE_IN_INITIALIZATION,
   REQUIRED_PARAMETER_WITH_DEFAULT,
   RETURN_IN_GENERATOR,
   RETURN_NOTHING,
   RETURN_VALUE_IN_VOID,
@@ skipping 2235 matching lines @@
 main() {}
 """,
             """
 // package name must be valid
 import 'package:not\valid/foo.dart';
 
 main() {}
 """
           ]),
 
-      MessageKind.READ_SCRIPT_ERROR: const MessageTemplate(
-          MessageKind.READ_SCRIPT_ERROR, "Can't read '#{uri}' (#{exception}).",
+      MessageKind.READ_URI_ERROR: const MessageTemplate(
+          MessageKind.READ_URI_ERROR, "Can't read '#{uri}' (#{exception}).",
           // Don't know how to fix since the underlying error is unknown.
           howToFix: DONT_KNOW_HOW_TO_FIX,
           examples: const [
             """
 // 'foo.dart' does not exist.
 import 'foo.dart';
 
 main() {}
 """
           ]),
@@ skipping 1172 matching lines @@
   static String convertToString(value) {
     if (value is ErrorToken) {
       // Shouldn't happen.
       return value.assertionMessage;
     } else if (value is Token) {
       value = value.lexeme;
     }
     return '$value';
   }
 }