Compute function types together with the parameters.

lib/compiler/implementation/compile_time_constants.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.
 
 class Constant implements Hashable {
   const Constant();
 
   bool isNull() => false;
   bool isBool() => false;
   bool isTrue() => false;
@@ skipping 1027 matching lines @@
     return super.visitSend(send);
   }
 
   /**
    * Given the arguments (a list of constants) assigns them to the parameters,
    * updating the definitions map. If the constructor has field-initializer
    * parameters (like [:this.x:]), also updates the [fieldValues] map.
    */
   void assignArgumentsToParameters(List<Constant> arguments) {
     // Assign arguments to parameters.
-    FunctionParameters parameters = constructor.computeParameters(compiler);
+    FunctionSignature parameters = constructor.computeSignature(compiler);
     int index = 0;
     parameters.forEachParameter((Element parameter) {
       Constant argument = arguments[index++];
       definitions[parameter] = argument;
       if (parameter.kind == ElementKind.FIELD_PARAMETER) {
         FieldParameterElement fieldParameterElement = parameter;
         fieldValues[fieldParameterElement.fieldElement] = argument;
       }
     });
   }
@@ skipping 88 matching lines @@
       Constant fieldValue = fieldValues[field];
       if (fieldValue === null) {
         // Use the default value.
         fieldValue = compiler.compileVariable(field);
       }
       jsNewArguments.add(fieldValue);
     });
     return jsNewArguments;
   }
 }