Update language tests to new getter syntax.

dart/tests/language/parameter_initializer_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.
 
 class ParameterInitializerTest {
 
   static testMain() {
     var obj = new Foo.untyped(1);
     Expect.equals(1, obj.x);
 
@@ skipping 38 matching lines @@
 class SubFoo extends Foo {
   SubFoo(num y) : super(y), x_ = 0 {
     // Subfoo.setter of x has been invoked in the Foo constructor.
     Expect.equals(x, 1);
     Expect.equals(x_, 1);
 
     // The super.x will resolved to the field in Foo.
     Expect.equals(super.x, y);
   }
 
-  get x() {
+  get x {
     return x_;
   }
 
   set x(num val) {
     x_ = val;
   }
 
   num x_;
 }
 
 class SubSubFoo extends SubFoo {
   SubSubFoo(num y) : super(y) {
     // Subfoo.setter of x has been invoked in the Foo constructor.
     Expect.equals(x, 1);
     Expect.equals(x_, 1);
 
     // There is no way to get to the field in Foo.
     Expect.equals(super.x, 1);
   }
 }
 
 main() {
   ParameterInitializerTest.testMain();
 }