Update language tests to new getter syntax.

dart/tests/language/instance_compound_assignment_operator_test.dart

Index: dart/tests/language/instance_compound_assignment_operator_test.dart
diff --git a/dart/tests/language/instance_compound_assignment_operator_test.dart b/dart/tests/language/instance_compound_assignment_operator_test.dart
index f27528953f002a65148eb8ad54ff7bf27c3fe592..a69cbe6bc4d5f90688e72c6a578694d8ec380cc9 100644
--- a/dart/tests/language/instance_compound_assignment_operator_test.dart
+++ b/dart/tests/language/instance_compound_assignment_operator_test.dart
@@ -12,7 +12,7 @@ class A {
   var _g = 0;
   var gGetCount = 0;
   var gSetCount = 0;
-  get g() {
+  get g {
     gGetCount++;
     return _g;
   }
@@ -25,7 +25,7 @@ class A {
 
 class B {
   B() : _a = new A(), count = 0 {}
-  get a() {
+  get a {
     count++;
     return _a;
   }