Fix dart format

Author: srburton

sdk/lib/_internal/vm_shared/lib/bool_patch.dart

@@ -2,9 +2,7 @@
 // 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.
 
-import "dart:_internal"
-  show patch,
-       checkNotNullable;
+import "dart:_internal" show patch, checkNotNullable;
 
 @patch
 @pragma("vm:entry-point")

sdk/lib/core/bool.dart

@@ -98,8 +98,10 @@ class bool {
   ///
   /// If [caseSensitive] is `true`, which is the default,
   /// the only accepted inputs are the strings `"true"` and `"false"`.
-  /// If [caseSensitive] is `false`, any combination of upper and lower case ASCII letters
-  /// in the words `"true"` and `"false"` are accepted, as if the input was first lower-cased.
+  /// 
+  /// If [caseSensitive] is `false`, any combination of upper and lower case 
+  /// ASCII letters in the words `"true"` and `"false"` are accepted, as if the 
+  /// input was first lower-cased.
   ///
   /// If the [source] string does not contain a valid boolean literal
   /// a [FormatException] is thrown.