Change core lib, dart2js, and more for new optional parameters syntax

lib/compiler/implementation/ssa/types.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.
 
 abstract class HType {
   const HType();
 
   /**
    * Returns an [HType] that represents [type] and all types that have
    * [type] as supertype.
@@ skipping 665 matching lines @@
     return 'BoundedType($type, $_canBeNull, $_isExact)';
   }
 
   bool canBeNull() => _canBeNull;
 
   bool isExact() => _isExact;
 
   const HBoundedType(DartType this.type,
                      [bool canBeNull = false, isExact = false])
       : _canBeNull = canBeNull, _isExact = isExact;
-  const HBoundedType.exact(DartType type) : this(type, isExact: true);
-  const HBoundedType.withNull(DartType type) : this(type, canBeNull: true);
+  const HBoundedType.exact(DartType type) : this(type, false, true);
+  const HBoundedType.withNull(DartType type) : this(type, true, false);
   const HBoundedType.nonNull(DartType type) : this(type);
 
   DartType computeType(Compiler compiler) => type;
 
   Element lookupMember(SourceString name) {
     if (!isExact()) return null;
     ClassElement classElement = type.element;
     return classElement.lookupMember(name);
   }
 
@@ skipping 169 matching lines @@
   operator [](HInstruction instruction) {
     HType result = _map[instruction];
     if (result == null) return instruction.guaranteedType;
     return result;
   }
 
   operator []=(HInstruction instruction, HType value) {
     _map[instruction] = value;
   }
 }