Third round of cleanups for new optional parameter semantics.

tests/language/call_operator_test.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.
 
 
 // simple test with no types in signature
 class A1 {
   call() => 42;
 }
 
@@ skipping 11 matching lines @@
   call(arg) => 7 * arg;
 }
 
 // Test named arguments
 class D {
   call([arg=6]) => 7 * arg;
 }
 
 // Non-trivial method body combination of positional and named.
 class E {
-  String call(String str, [int count=1]) {
+  String call(String str, {int count: 1}) {
     StringBuffer buffer = new StringBuffer();
     for (var i = 0; i < count; i++) {
       buffer.add(str);
       if (i < count - 1) {
         buffer.add(":");
       }
     }
     return buffer.toString();
   }
 }
@@ skipping 11 matching lines @@
   Expect.equals(28, b());
   Expect.equals(28, b.call());
 
   var c = new C();
   Expect.equals(42, c(6));
   Expect.equals(42, c.call(6));
 
   var d = new D();
   Expect.equals(42, d());
   Expect.equals(7, d(1));
-  Expect.equals(14, d(arg:2));
+  Expect.equals(14, d(2));
   Expect.equals(42, d.call());
   Expect.equals(7, d.call(1));
-  Expect.equals(14, d.call(arg:2));
+  Expect.equals(14, d.call(2));
 
   var e = new E();
   Expect.equals("foo", e("foo"));
-  Expect.equals("foo:foo", e("foo", 2));
+  Expect.equals("foo:foo", e("foo", count:2));
   Expect.equals("foo:foo:foo", e("foo", count:3));
   Expect.equals("foo", e.call("foo"));
-  Expect.equals("foo:foo", e.call("foo", 2));
+  Expect.equals("foo:foo", e.call("foo", count:2));
   Expect.equals("foo:foo:foo", e.call("foo", count:3));
 }