Format all dart dev compiler files

pkg/dev_compiler/test/codegen/destructuring.dart

 // compile options: --destructure-named-params
 import 'dart-ext:foo';
 import 'package:js/src/varargs.dart';
 
 f(int a, b, [c = 1]) {
   f(a, b, c);
 }
+
 external f_ext(int a, b, [c = 1]);
 f_nat(int a, b, [c = 1]) native "f_nat";
 f_sync(int a, b, [c = 1]) sync* {}
 f_async(int a, b, [c = 1]) async* {}
 
-g(int a, b, {c : 1}) {
+g(int a, b, {c: 1}) {
   f(a, b, c);
 }
-external g_ext(int a, b, {c : 1});
-g_nat(int a, b, {c : 1}) native "g_nat";
-g_sync(int a, b, {c : 1}) sync* {}
-g_async(int a, b, {c : 1}) async* {}
+
+external g_ext(int a, b, {c: 1});
+g_nat(int a, b, {c: 1}) native "g_nat";
+g_sync(int a, b, {c: 1}) sync* {}
+g_async(int a, b, {c: 1}) async* {}
 
 r(int a, @rest others) {
   r(a, spread(others));
 }
+
 external r_ext(int a, @rest others);
 r_nat(int a, @rest others) native "r_nat";
 r_sync(int a, @rest others) sync* {}
 r_async(int a, @rest others) async* {}
 
 invalid_names1(int let, function, arguments) {
   f(let, function, arguments);
 }
+
 invalid_names2([int let, function = 1, arguments]) {
   f(let, function, arguments);
 }
-invalid_names3({int let, function, arguments : 2}) {
+
+invalid_names3({int let, function, arguments: 2}) {
   f(let, function, arguments);
 }
 
-names_clashing_with_object_props({int constructor, valueOf, hasOwnProperty : 2}) {
+names_clashing_with_object_props(
+    {int constructor, valueOf, hasOwnProperty: 2}) {
   f(constructor, valueOf, hasOwnProperty);
 }