dart2js cps: Support inlining constructors with type arguments.

pkg/compiler/lib/src/tree_ir/tree_ir_tracer.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 tree_ir_tracer;
 
 import 'dart:async' show EventSink;
 import '../tracer.dart';
 import 'tree_ir_nodes.dart';
 
@@ skipping 498 matching lines @@
     }
     // TODO(sra): Fix up this.
     return '$object."is-${node.dartType}"';
   }
 
   String visitCreateBox(CreateBox node) {
     return 'CreateBox';
   }
 
   String visitCreateInstance(CreateInstance node) {
-    String className = node.classElement.name;
+    String name = '${node.dartType}';
     String arguments = node.arguments.map(visitExpression).join(', ');
-    return 'CreateInstance $className($arguments)';
+    return 'CreateInstance $name($arguments)';
   }
 
   @override
   String visitReadTypeVariable(ReadTypeVariable node) {
     return 'Read ${node.variable.element} ${visitExpression(node.target)}';
   }
 
   @override
   String visitReifyRuntimeType(ReifyRuntimeType node) {
     return 'Reify ${node.value}';
@@ skipping 86 matching lines @@
       String prefix = v.element == null ? 'v' : '${v.element.name}_';
       while (name == null || _usedNames.contains(name)) {
         name = "$prefix${_counter++}";
       }
       _names[v] = name;
       _usedNames.add(name);
     }
     return name;
   }
 }