[dartdev] make the 'dart fix' command visible

Change-Id: I545242f2dbb0092f3d2e31b9cfbecbb2705df69f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/175400
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Phil Quitslund <pquitslund@google.com>
Reviewed-by: Ben Konyi <bkonyi@google.com>
Commit-Queue: Devon Carew <devoncarew@google.com>
diff --git a/pkg/dartdev/lib/src/commands/fix.dart b/pkg/dartdev/lib/src/commands/fix.dart
index d3ef96e..9e5e3b5 100644
--- a/pkg/dartdev/lib/src/commands/fix.dart
+++ b/pkg/dartdev/lib/src/commands/fix.dart
@@ -32,9 +32,7 @@
       'subject to change before the next stable release. Feedback is welcome - '
       'please file at https://github.com/dart-lang/sdk/issues.';
 
-  // This command is hidden as it's currently experimental.
-  FixCommand({bool verbose = false})
-      : super(cmdName, cmdDescription, hidden: true) {
+  FixCommand({bool verbose = false}) : super(cmdName, cmdDescription) {
     argParser.addFlag('dry-run',
         abbr: 'n',
         defaultsTo: false,