Handle getters/setters and try in kernel_impact.

tests/compiler/dart2js/kernel/impact_test.dart

 // Copyright (c) 2016, 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.
 
 library dart2js.kernel.impact_test;
 
 import 'dart:async';
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/commandline_options.dart';
 import 'package:compiler/src/common.dart';
@@ skipping 58 matching lines @@
   testThrow();
   testSyncStar();
   testAsync();
   testAsyncStar();
   testIfThen();
   testIfThenElse();
   testForIn(null);
   testForInTyped(null);
   testAsyncForIn(null);
   testAsyncForInTyped(null);
+  testTryCatch();
+  testTryCatchOn();
+  testTryCatchStackTrace();
+  testTryFinally();
   testTopLevelInvoke();
   testTopLevelInvokeTyped();
   testTopLevelFunctionTyped();
   testTopLevelFunctionGet();
+  testTopLevelGetterGet();
+  testTopLevelGetterGetTyped();
+  testTopLevelSetterSet();
+  testTopLevelSetterSetTyped();
   testTopLevelField();
   testTopLevelFieldLazy();
   testTopLevelFieldConst();
   testTopLevelFieldFinal();
   testTopLevelFieldTyped();
   testTopLevelFieldGeneric1();
   testTopLevelFieldGeneric2();
   testTopLevelFieldGeneric3();
+  testTopLevelFieldWrite();
   testDynamicInvoke(null);
   testDynamicGet(null);
   testDynamicSet(null);
   testLocalWithoutInitializer();
   testLocalWithInitializer();
   testLocalWithInitializerTyped();
   testLocalFunction();
   testLocalFunctionTyped();
   testLocalFunctionInvoke();
   testLocalFunctionGet();
@@ skipping 81 matching lines @@
 }
 testForInTyped(o) {
   for (int e in o) {}
 }
 testAsyncForIn(o) async {
   await for (var e in o) {}
 }
 testAsyncForInTyped(o) async {
   await for (int e in o) {}
 }
+testTryCatch() {
+  try {} catch (e) {}
+}
+testTryCatchOn() {
+  try {} on String catch (e) {}
+}
+testTryCatchStackTrace() {
+  try {} catch (e, s) {}
+}
+testTryFinally() {
+  try {} finally {}
+}
 topLevelFunction1(a) {}
 topLevelFunction2(a, [b, c]) {}
 topLevelFunction3(a, {b, c}) {}
 testTopLevelInvoke() {
   topLevelFunction1(0);
   topLevelFunction2(1);
   topLevelFunction2(2, 3);
   topLevelFunction2(4, 5, 6);
   topLevelFunction3(7);
   topLevelFunction3(8, b: 9);
@@ skipping 22 matching lines @@
 topLevelFunctionTyped2(void a(num b, [String c])) {}
 topLevelFunctionTyped3(void a(num b, {String c, int d})) {}
 topLevelFunctionTyped4(void a(num b, {String d, int c})) {}
 testTopLevelFunctionTyped() {
   topLevelFunctionTyped1(null);
   topLevelFunctionTyped2(null);
   topLevelFunctionTyped3(null);
   topLevelFunctionTyped4(null);
 }
 testTopLevelFunctionGet() => topLevelFunction1;
+get topLevelGetter => 0;
+testTopLevelGetterGet() => topLevelGetter;
+int get topLevelGetterTyped => 0;
+testTopLevelGetterGetTyped() => topLevelGetterTyped;
+set topLevelSetter(_) {}
+testTopLevelSetterSet() => topLevelSetter = 0;
+void set topLevelSetterTyped(int value) {}
+testTopLevelSetterSetTyped() => topLevelSetterTyped = 0;
 
 var topLevelField;
 testTopLevelField() => topLevelField;
 var topLevelFieldLazy = topLevelFunction1(null);
 testTopLevelFieldLazy() => topLevelFieldLazy;
 const topLevelFieldConst = 0;
 testTopLevelFieldConst() => topLevelFieldConst;
 final topLevelFieldFinal = topLevelFunction1(null);
 testTopLevelFieldFinal() => topLevelFieldFinal;
 int topLevelFieldTyped;
 testTopLevelFieldTyped() => topLevelFieldTyped;
 GenericClass topLevelFieldGeneric1;
 testTopLevelFieldGeneric1() => topLevelFieldGeneric1;
 GenericClass<dynamic, dynamic> topLevelFieldGeneric2;
 testTopLevelFieldGeneric2() => topLevelFieldGeneric2;
 GenericClass<int, String> topLevelFieldGeneric3;
 testTopLevelFieldGeneric3() => topLevelFieldGeneric3;
-
+testTopLevelFieldWrite() => topLevelField = 3;
 testDynamicInvoke(o) {
   o.f1(0);
   o.f2(1);
   o.f3(2, 3);
   o.f4(4, 5, 6);
   o.f5(7);
   o.f6(8, b: 9);
   o.f7(10, c: 11);
   o.f8(12, b: 13, c: 14);
   o.f9(15, c: 16, b: 17);
@@ skipping 148 matching lines @@
         // we cannot tell the diferrence.
         builder.registerFeature(Feature.STRING_INTERPOLATION);
         builder.registerFeature(Feature.STRING_JUXTAPOSITION);
         break;
       default:
     }
   }
   impact.nativeData.forEach(builder.registerNativeData);
   return builder;
 }