chromeos: Make network enrollment and SIM unlock dialogs work with mash

chrome/browser/chromeos/hats/hats_dialog.h

Index: chrome/browser/chromeos/hats/hats_dialog.h
diff --git a/chrome/browser/chromeos/hats/hats_dialog.h b/chrome/browser/chromeos/hats/hats_dialog.h
index 09317de26de845374a36bf45690d76c0f9887e7c..9041cecdb3f6de23d4dd24edab3f5622e0ee7d3f 100644
--- a/chrome/browser/chromeos/hats/hats_dialog.h
+++ b/chrome/browser/chromeos/hats/hats_dialog.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2016 The Chromium Authors. All rights reserved.
+// Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -7,14 +7,13 @@
 
 #include <string>
 
-#include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/values.h"
-#include "ui/gfx/native_widget_types.h"
 #include "ui/web_dialogs/web_dialog_delegate.h"
 
 namespace chromeos {
 
+// Happiness tracking survey dialog. Sometimes appears after login to ask the
+// user how satisfied they are with their Chromebook.
 class HatsDialog : public ui::WebDialogDelegate {
  public:
   HatsDialog();