Make initializing formal access available by default

pkg/compiler/lib/src/commandline_options.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // 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.
 
 library dart2js.cmdline.options;
 
 /// Commandline flags used in `dart2js.dart` and/or `apiimpl.dart`.
 class Flags {
   static const String allowMockCompilation = '--allow-mock-compilation';
   static const String allowNativeExtensions = '--allow-native-extensions';
@@ skipping 56 matching lines @@
   // but considering all method type variables to have bound `dynamic` no
   // matter which bound they have syntactically (such that their value as types
   // is unchecked), and then replacing method type variables by a `DynamicType`
   // (such that the backend does not need to take method type arguments into
   // account).
   //
   // The feature has an informal specification which is available at
   // https://gist.github.com/eernstg/4353d7b4f669745bed3a5423e04a453c.
   static const String genericMethodSyntax = '--generic-method-syntax';
 
+  // Initializing-formal access is enabled by default and cannot be disabled.
+  // For backward compatibility the option is still accepted, but it is ignored.
+  static const String initializingFormalAccess = '--initializing-formal-access';
+
   // Experimental flags.
   static const String resolveOnly = '--resolve-only';
-  static const String initializingFormalAccess = '--initializing-formal-access';
 }
 
 class Option {
   static const String showPackageWarnings =
       '${Flags.showPackageWarnings}|${Flags.showPackageWarnings}=.*';
 
   // Experimental options.
   static const String resolutionInput = '--resolution-input=.+';
   static const String bazelPaths = '--bazel-paths=.+';
 }