Scaffold for MD-Settings, inside chrome://md-settings.

chrome/browser/resources/settings/demo.css

Index: chrome/browser/resources/settings/demo.css
diff --git a/chrome/browser/resources/md_settings/md_settings.css b/chrome/browser/resources/settings/demo.css
similarity index 55%
copy from chrome/browser/resources/md_settings/md_settings.css
copy to chrome/browser/resources/settings/demo.css
index ebd05b25add9c92c256aac0790f7aa6e2c6c59d5..e6068747a88d4f00774c290007d3fbdf62ab9592 100644
--- a/chrome/browser/resources/md_settings/md_settings.css
+++ b/chrome/browser/resources/settings/demo.css
@@ -1,7 +1,3 @@
-/* Copyright 2015 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. */
-
 @font-face {
   font-family: 'Roboto';
   font-style: normal;
@@ -13,11 +9,3 @@
 body {
   font-family: Roboto;
 }
-
-section {
-  margin-top: 50px;
-}
-
-cr-dropdown-menu {
-  width: 200px;
-}