dart2js: Add a type parameter to class Reference in the CPS IR.

pkg/compiler/lib/src/cps_ir/constant_propagation.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.
 
 part of dart2js.optimizers;
 
 /**
  * Propagates constants throughout the IR, and replaces branches with fixed
  * jumps as well as side-effect free expressions with known constant results.
  * Should be followed by the [ShrinkingReducer] pass.
@@ skipping 65 matching lines @@
     assert(continuation.parameters.length == 1);
 
     // Set up the replacement structure.
 
     PrimitiveConstantValue primitiveConstant = cell.constant;
     ConstantExpression constExp =
         new PrimitiveConstantExpression(primitiveConstant);
     Constant constant = new Constant(constExp);
     LetPrim letPrim = new LetPrim(constant);
     InvokeContinuation invoke =
-        new InvokeContinuation(continuation, <Definition>[constant]);
+        new InvokeContinuation(continuation, <Primitive>[constant]);
 
     invoke.parent = constant.parent = letPrim;
     letPrim.body = invoke;
 
     // Replace the method invocation.
 
     InteriorNode parent = node.parent;
     letPrim.parent = parent;
     parent.body = letPrim;
 
@@ skipping 20 matching lines @@
       return;
     }
 
     Continuation successor = (trueReachable) ?
         node.trueContinuation.definition : node.falseContinuation.definition;
 
     // Replace the branch by a continuation invocation.
 
     assert(successor.parameters.isEmpty);
     InvokeContinuation invoke =
-        new InvokeContinuation(successor, <Definition>[]);
+        new InvokeContinuation(successor, <Primitive>[]);
 
     InteriorNode parent = node.parent;
     invoke.parent = parent;
     parent.body = invoke;
 
     // Unlink all removed references.
 
     node.trueContinuation.unlink();
     node.falseContinuation.unlink();
     IsTrue isTrue = node.condition;
@@ skipping 519 matching lines @@
       return that;
     }
 
     if (this.constant == that.constant) {
       return this;
     }
 
     return NonConst;
   }
 }