Fix DDC errors on DDC

lib/src/info.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.
 
 /// Defines static information collected by the type checker and used later by
 /// emitters to generate code.
 library dev_compiler.src.info;
 
 import 'dart:mirrors';
 
@@ skipping 702 matching lines @@
   R visitClosureWrap(ClosureWrap node) => visitClosureWrapBase(node);
   R visitDynamicInvoke(DynamicInvoke node) => visitConversion(node);
   R visitInferredTypeBase(InferredTypeBase node) => visitConversion(node);
 }
 
 /// Automatically infer list of types by scanning this library using mirrors.
 final List<Type> infoTypes = () {
   var allTypes = new Set();
   var baseTypes = new Set();
   var infoMirror = reflectClass(StaticInfo);
-  var declarations = infoMirror.owner.declarations.values;
-  for (var cls in declarations.where((d) => d is ClassMirror)) {
+  var libMirror = infoMirror.owner as LibraryMirror;
+  var declarations = libMirror.declarations.values;
+  for (ClassMirror cls in declarations.where((d) => d is ClassMirror)) {
     if (cls.isSubtypeOf(infoMirror)) {
       allTypes.add(cls);
       baseTypes.add(cls.superclass);
     }
   }
   allTypes.removeAll(baseTypes);
   return new List<Type>.from(allTypes.map((mirror) => mirror.reflectedType))
     ..sort((t1, t2) => '$t1'.compareTo('$t2'));
 }();
 
 class AnalyzerError extends Message {
   factory AnalyzerError.from(analyzer.AnalysisError error) {
     var severity = error.errorCode.type.severity;
     var isError = severity == analyzer.ErrorSeverity.WARNING;
     var level = isError ? Level.SEVERE : Level.WARNING;
     int begin = error.offset;
     int end = begin + error.length;
     return new AnalyzerError(error.message, level, begin, end);
   }
 
   const AnalyzerError(String message, Level level, int begin, int end)
       : super(message, level, begin, end);
 }