cps-ir: Set runtime type information for new objects that require it.

pkg/compiler/lib/src/js_backend/codegen/glue.dart

 // Copyright (c) 2014, 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 code_generator_dependencies;
 
 import '../js_backend.dart';
 import '../../dart2jslib.dart';
 import '../../js_emitter/js_emitter.dart';
 import '../../js/js.dart' as js;
 import '../../constants/values.dart';
 import '../../elements/elements.dart';
 import '../../constants/expressions.dart';
-import '../../dart_types.dart' show TypeVariableType;
+import '../../dart_types.dart' show DartType, TypeVariableType;
 
 /// Encapsulates the dependencies of the function-compiler to the compiler,
 /// backend and emitter.
 // TODO(sigurdm): Should be refactored when we have a better feeling for the
 // interface.
 class Glue {
   final Compiler _compiler;
 
   JavaScriptBackend get _backend => _compiler.backend;
 
@@ skipping 122 matching lines @@
 
   bool needsSubstitutionForTypeVariableAccess(ClassElement cls) {
     ClassWorld classWorld = _compiler.world;
     if (classWorld.isUsedAsMixin(cls)) return true;
 
     Iterable<ClassElement> subclasses = _compiler.world.strictSubclassesOf(cls);
     return subclasses.any((ClassElement subclass) {
       return !_backend.rti.isTrivialSubstitution(subclass, cls);
     });
   }
+
+  FunctionElement getAddRuntimeTypeInformation() {
+    return _backend.getSetRuntimeTypeInfo();
+  }
+
+  js.Expression generateTypeRepresentation(DartType dartType,
+                                           List<js.Expression> arguments) {
+    int variableIndex = 0;
+    js.Expression representation = _backend.rti.getTypeRepresentation(
+        dartType,
+        (_) => arguments[variableIndex++]);
+    assert(variableIndex == arguments.length);
+    return representation;
+  }
 }