Add DartTypes to abstract Types.

pkg/compiler/lib/src/constant_system.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.
 
 part of dart2js;
 
 abstract class Operation {
   String get name;
 }
 
@@ skipping 44 matching lines @@
   ConstantValue createString(DartString string);
   ConstantValue createBool(bool value);
   ConstantValue createNull();
   ConstantValue createMap(Compiler compiler,
                           InterfaceType type,
                           List<ConstantValue> keys,
                           List<ConstantValue> values);
 
   // We need to special case the subtype check for JavaScript constant
   // system because an int is a double at runtime.
-  bool isSubtype(Compiler compiler, DartType s, DartType t);
+  bool isSubtype(DartTypes types, DartType s, DartType t);
 
   /** Returns true if the [constant] is an integer at runtime. */
   bool isInt(ConstantValue constant);
   /** Returns true if the [constant] is a double at runtime. */
   bool isDouble(ConstantValue constant);
   /** Returns true if the [constant] is a string at runtime. */
   bool isString(ConstantValue constant);
   /** Returns true if the [constant] is a boolean at runtime. */
   bool isBool(ConstantValue constant);
   /** Returns true if the [constant] is null at runtime. */
@@ skipping 25 matching lines @@
       case ">>":  return shiftRight;
       case "<":   return less;
       case "<=":  return lessEqual;
       case ">":   return greater;
       case ">=":  return greaterEqual;
       case "==":  return equal;
       default:    return null;
     }
   }
 }