Run dartfmt on all files under runtime.

runtime/observatory/tests/service/typed_data_test.dart

Index: runtime/observatory/tests/service/typed_data_test.dart
diff --git a/runtime/observatory/tests/service/typed_data_test.dart b/runtime/observatory/tests/service/typed_data_test.dart
index df52afdaa72ed63c918e8c6a60f922987229e860..abb7d537f2ea778d2ff57deb11028b8275233190 100644
--- a/runtime/observatory/tests/service/typed_data_test.dart
+++ b/runtime/observatory/tests/service/typed_data_test.dart
@@ -77,7 +77,6 @@ void script() {
 }
 
 var tests = [
-
   (Isolate isolate) async {
     script();
     var lib = await isolate.rootLibrary.load();
@@ -118,6 +117,7 @@ var tests = [
         expect(actualValue, equals(expectedValue));
       }
     }
+
     expectTypedData("int8List", int8List);
     expectTypedData("int16List", int16List);
     expectTypedData("int32List", int32List);
@@ -133,7 +133,6 @@ var tests = [
     expectTypedData("float32x4List", float32x4List);
     expectTypedData("float64x2List", float64x2List);
   },
-
 ];
 
 main(args) => runIsolateTests(args, tests, testeeBefore: script);