[uber page] Merge advanced options page into browser options.

chrome/browser/resources/options2/advanced_options.css

-/* Copyright (c) 2012 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. */
-
-#advancedPage .section-group:not(:first-child) {
-  margin-top: 10px;
-}
-
-#advancedPage .section-group:not(:last-child) {
-  margin-bottom: 10px;
-}
-
-#advancedPage select,
-#advancedPage .web-content-select-label {
-  min-width: 145px;
-}
-
-#advancedPage .web-content-select-label > span:only-of-type {
-  display: inline-block;
-  min-width: 100px;
-}
-
-#download-location-group {
-  margin: 10px 0 5px;
-  min-width: 470px;
-}
-
-#fontSettingsCustomizeFontsButton,
-#privacyClearDataButton {
-  margin-left: 10px;
-}
-
-#timezone-value {
-   display: inline-block;
-   vertical-align: baseline;
-}
-
-#privacy-explanation {
-  line-height: 1.8em;
-}
-
-#privacy-explanation span:first-child {
-  display: block;
-}