views: Textfield gets password reveal duration from ViewsDelegate

ui/views/controls/textfield/textfield.h

Index: ui/views/controls/textfield/textfield.h
diff --git a/ui/views/controls/textfield/textfield.h b/ui/views/controls/textfield/textfield.h
index 54391a380cb8ac1b51e0dd753f01014f045b569b..2e0d37edf4c86f3d41b08153dad0872f00919931 100644
--- a/ui/views/controls/textfield/textfield.h
+++ b/ui/views/controls/textfield/textfield.h
@@ -434,8 +434,7 @@ class VIEWS_EXPORT Textfield : public View,
   // The input flags of this text field.
   int text_input_flags_;
 
-  // The duration and timer to reveal the last typed password character.
-  base::TimeDelta password_reveal_duration_;
+  // The timer to reveal the last typed password character.
   base::OneShotTimer password_reveal_timer_;
 
   // Tracks whether a user action is being performed; i.e. OnBeforeUserAction()