Share test-source between full emitter and fast startup emitter dill tests.

tests/compiler/dart2js/kernel/compile_from_dill_fast_startup_test.dart

Index: tests/compiler/dart2js/kernel/compile_from_dill_fast_startup_test.dart
diff --git a/tests/compiler/dart2js/kernel/compile_from_dill_fast_startup_test.dart b/tests/compiler/dart2js/kernel/compile_from_dill_fast_startup_test.dart
index a25a999d63f83ec3f4464926c366ce631effd90f..7f160a94b334f85f2505165a0c83594eca376335 100644
--- a/tests/compiler/dart2js/kernel/compile_from_dill_fast_startup_test.dart
+++ b/tests/compiler/dart2js/kernel/compile_from_dill_fast_startup_test.dart
@@ -13,34 +13,6 @@ import '../serialization/helper.dart';
 
 import 'compile_from_dill_test_helper.dart';
 
-// TODO(johnniwinther): Maybe share this with 'compile_from_dill_test.dart'.
-const SOURCE = const {
-  'main.dart': '''
-foo({named}) => 1;
-bar(a) => !a;
-class Class {
-  var field;
-  static var staticField;
-  Class(this.field);
-}
-main() {
-  foo();
-  bar(true);
-  [];
-  {};
-  new Object();
-  new Class('');
-  Class.staticField;
-  var x = null;
-  for (int i = 0; i < 10; i++) {
-    x = i;
-    if (i == 5) break;
-  }
-  return x;
-}
-'''
-};
-
 main(List<String> args) {
   asyncTest(() async {
     await mainInternal(args);