dart2js: run dartfmt on tests

tests/compiler/dart2js/expect_annotations2_test.dart

Index: tests/compiler/dart2js/expect_annotations2_test.dart
diff --git a/tests/compiler/dart2js/expect_annotations2_test.dart b/tests/compiler/dart2js/expect_annotations2_test.dart
index f0572c588b66c3c2118e25d0fac961efd0a92067..16089752b98689cf9113e2603ca65282d68ed9e8 100644
--- a/tests/compiler/dart2js/expect_annotations2_test.dart
+++ b/tests/compiler/dart2js/expect_annotations2_test.dart
@@ -7,7 +7,7 @@ import "package:async_helper/async_helper.dart";
 import 'memory_compiler.dart';
 
 const MEMORY_SOURCE_FILES = const {
-    'main.dart': '''
+  'main.dart': '''
         import 'package:expect/expect.dart';
 
         @NoInline()
@@ -31,14 +31,14 @@ const MEMORY_SOURCE_FILES = const {
           print(A.bar(87654));
           print(new A().gee(1337, 919182));
           print(new A().field + 1);
-        }'''};
+        }'''
+};
 
 void main() {
   asyncTest(() async {
     OutputCollector collector = new OutputCollector();
     CompilationResult result = await runCompiler(
-        memorySourceFiles: MEMORY_SOURCE_FILES,
-        outputProvider: collector);
+        memorySourceFiles: MEMORY_SOURCE_FILES, outputProvider: collector);
     // Simply check that the constants of the small functions are still in the
     // output, and that we don't see the result of constant folding.
     String jsOutput = collector.getOutput('', 'js');