Fix a few bugs breaking the pub tests.

utils/pub/io.dart

Index: utils/pub/io.dart
diff --git a/utils/pub/io.dart b/utils/pub/io.dart
index 8e298a67b39719e9bbe04207822db82210e2561a..a0e69a9172ee038144b4bb04d82094bbdd9144b6 100644
--- a/utils/pub/io.dart
+++ b/utils/pub/io.dart
@@ -125,10 +125,9 @@ String createTempDir([dir = '']) {
   return tempDir.path;
 }
 
-// TODO(nweiz): rename includeHiddenFiles to includeHidden.
 /// Lists the contents of [dir]. If [recursive] is `true`, lists subdirectory
-/// contents (defaults to `false`). If [includeHiddenFiles] is `true`, includes
-/// files and directories beginning with `.` (defaults to `false`).
+/// contents (defaults to `false`). If [includeHidden] is `true`, includes files
+/// and directories beginning with `.` (defaults to `false`).
 ///
 /// The returned paths are guaranteed to begin with [dir].
 List<String> listDir(String dir, {bool recursive: false,