Move dart_types to elements/resolution_types

pkg/compiler/lib/src/js_backend/constant_emitter.dart

 // Copyright (c) 2012, 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 '../common.dart';
 import '../compiler.dart' show Compiler;
 import '../constants/values.dart';
-import '../dart_types.dart';
+import '../elements/resolution_types.dart';
 import '../elements/elements.dart';
 import '../io/code_output.dart';
 import '../js/js.dart' as jsAst;
 import '../js/js.dart' show js;
 import 'backend.dart';
 import 'constant_system_javascript.dart';
 import 'namer.dart';
 
 typedef jsAst.Expression _ConstantReferenceGenerator(ConstantValue constant);
 
@@ skipping 330 matching lines @@
       arguments.add(rtiEncoder.getTypeRepresentation(argument, unexpected));
     }
     return new jsAst.ArrayInitializer(arguments);
   }
 
   @override
   jsAst.Expression visitDeferred(DeferredConstantValue constant, [_]) {
     return constantReferenceGenerator(constant.referenced);
   }
 }