Format benchmarks/.

Change-Id: I1362ada67a02b0ed352612fc29c727e94d8cd254
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/394901
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>

benchmarks/MapLookup/dart/maps.dart

@@ -2,13 +2,9 @@
 // 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.
 
-const const1 = <String, String>{
-  '0': '1',
-};
+const const1 = <String, String>{'0': '1'};
 
-final final1 = <String, String>{
-  '0': '1',
-};
+final final1 = <String, String>{'0': '1'};
 
 const const5 = <String, String>{
   '0': '1',

benchmarks/MapLookup/dart2/maps.dart

@@ -2,13 +2,9 @@
 // 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.
 
-const const1 = <String, String>{
-  '0': '1',
-};
+const const1 = <String, String>{'0': '1'};
 
-final final1 = <String, String>{
-  '0': '1',
-};
+final final1 = <String, String>{'0': '1'};
 
 const const5 = <String, String>{
   '0': '1',

benchmarks/MapLookup/generate_maps.dart

@@ -30,8 +30,12 @@ void main() {
   }
 }
 
-void generateMap(StringBuffer buffer, String name, int mapSize,
-    {bool isConst = true}) {
+void generateMap(
+  StringBuffer buffer,
+  String name,
+  int mapSize, {
+  bool isConst = true,
+}) {
   final constOrFinal = isConst ? 'const' : 'final';
   buffer.write('$constOrFinal $name = <String, String>{');
   for (int i = 0; i < mapSize; i++) {