Update language tests to new optional parameter syntax and semantics.

tests/language/closure7_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.
 
 // Test that implicitly bound closures work correctly
 
 class A {
   foo() => 499;
   fooo() => 4999;  // Implicit closure class can be shared with foo.
-  bar(x, [y = 8, z = 10]) => "1 $x $y $z";
-  gee(x, [y = 9, z = 11]) => "2 $x $y $z";  // Must not be shared with "bar".
-  toto(x, [y = 8, z = 10]) => "3 $x $y $z";  // Could be shared with "bar".
+  bar(x, {y: 8, z: 10}) => "1 $x $y $z";
+  gee(x, {y: 9, z: 11}) => "2 $x $y $z";  // Must not be shared with "bar".
+  toto(x, {y: 8, z: 10}) => "3 $x $y $z";  // Could be shared with "bar".
 
-  fisk(x, [y = 8, zz = 10]) => "4 $x $y $zz";
-  titi(x, [y = 8, zz = 77]) => "5 $x $y $zz";  // Could be shared with "fisk",
+  fisk(x, {y: 8, zz: 10}) => "4 $x $y $zz";
+  titi(x, {y: 8, zz: 77}) => "5 $x $y $zz";  // Could be shared with "fisk",
                                           // because default-val is never used.
 }
 
 class B {
   // All implicit closures of B can be shared with their equivalent functions
   // of A.
   foo() => 4990;
   fooo() => 49990;
-  bar(x, [y = 8, z = 10]) => "1B $x $y $z";
-  gee(x, [y = 9, z = 11]) => "2B $x $y $z";
-  toto(x, [y = 8, z = 10]) => "3B $x $y $z";
-  fisk(x, [y = 8, zz = 10]) => "4B $x $y $zz";
-  titi(x, [y = 8, zz = 77]) => "5B $x $y $zz";
+  bar(x, {y: 8, z: 10}) => "1B $x $y $z";
+  gee(x, {y: 9, z: 11}) => "2B $x $y $z";
+  toto(x, {y: 8, z: 10}) => "3B $x $y $z";
+  fisk(x, {y: 8, zz: 10}) => "4B $x $y $zz";
+  titi(x, {y: 8, zz: 77}) => "5B $x $y $zz";
 }
 
 
 tearOffFoo(o) => o.foo;
 tearOffFooo(o) => o.fooo;
 tearOffBar(o) => o.bar;
 tearOffGee(o) => o.gee;
 tearOffToto(o) => o.toto;
 tearOffFisk(o) => o.fisk;
 tearOffTiti(o) => o.titi;
@@ skipping 43 matching lines @@
   var fiskA = tearOffFisk(a);
   var fiskB = tearOffFisk(b);
   var titiA = tearOffTiti(a);
   var titiB = tearOffTiti(b);
 
   Expect.equals("4 311 8 987", fiskA(311, zz: 987));
   Expect.equals("4B 311 8 987", fiskB(311, zz: 987));
   Expect.equals("5 311 8 987", titiA(311, zz: 987));
   Expect.equals("5B 311 8 987", titiB(311, zz: 987));
 
-  Expect.equals("4 311 765 987", fiskA(311, 765, 987));
-  Expect.equals("4B 311 765 987", fiskB(311, 765, 987));
-  Expect.equals("5 311 765 987", titiA(311, 765, 987));
-  Expect.equals("5B 311 765 987", titiB(311, 765, 987));
+  Expect.equals("4 311 765 987", fiskA(311, y: 765, zz: 987));
+  Expect.equals("4B 311 765 987", fiskB(311, y: 765, zz: 987));
+  Expect.equals("5 311 765 987", titiA(311, y: 765, zz: 987));
+  Expect.equals("5B 311 765 987", titiB(311, y: 765, zz: 987));
 }