Disable formatting and add new-lines to make tests faster.

test/dart_codegen/expect/core/bool.dart

 part of dart.core;
-
-class bool {
-  factory bool.fromEnvironment(String name, {bool defaultValue: false}) {
-    throw new UnsupportedError(
-        'bool.fromEnvironment can only be used as a const constructor');
+ class bool {factory bool.fromEnvironment(String name, {
+  bool defaultValue : false}
+) {
+  throw new UnsupportedError('bool.fromEnvironment can only be used as a const constructor');
   }
-  String toString() {
-    return this ? "true" : "false";
+ String toString() {
+  return this ? "true" : "false";
   }
 }