Use default values of named arguments when invoking the default super constructor.

lib/compiler/implementation/universe.dart

Index: lib/compiler/implementation/universe.dart
diff --git a/lib/compiler/implementation/universe.dart b/lib/compiler/implementation/universe.dart
index e989efaab923cfe685d5e2621b1872e0b2699496..132b2622056e1117307a85c26b3960201750283a 100644
--- a/lib/compiler/implementation/universe.dart
+++ b/lib/compiler/implementation/universe.dart
@@ -119,11 +119,11 @@ class Selector implements Hashable {
    * Returns [:true:] if the selector and the [element] match; [:false:]
    * otherwise.
    */
-  bool addSendArgumentsToList(Send send,
-                              List list,
-                              FunctionParameters parameters,
-                              compileArgument(Node argument),
-                              compileConstant(Element element)) {
+  bool addArgumentsToList(Link<Node> arguments,
+                          List list,
+                          FunctionParameters parameters,
+                          compileArgument(Node argument),
+                          compileConstant(Element element)) {
     void addMatchingSendArgumentsToList(Link<Node> link) {
       for (; !link.isEmpty(); link = link.tail) {
         list.add(compileArgument(link.head));
@@ -132,7 +132,7 @@ class Selector implements Hashable {
 
     if (!this.applies(parameters)) return false;
     if (this.positionalArgumentCount == parameters.parameterCount) {
-      addMatchingSendArgumentsToList(send.arguments);
+      addMatchingSendArgumentsToList(arguments);
       return true;
     }
 
@@ -140,7 +140,6 @@ class Selector implements Hashable {
     // expected by the called function, which is the source order.
 
     // Visit positional arguments and add them to the list.
-    Link<Node> arguments = send.arguments;
     int positionalArgumentCount = this.positionalArgumentCount;
     for (int i = 0;
          i < positionalArgumentCount;