MD WebUI: Networking polish in OOBE and Settings

chrome/browser/resources/chromeos/login/oobe_back_button.css

Index: chrome/browser/resources/chromeos/login/oobe_back_button.css
diff --git a/chrome/browser/resources/chromeos/login/oobe_back_button.css b/chrome/browser/resources/chromeos/login/oobe_back_button.css
deleted file mode 100644
index 341760ebb556f44ab6f87e7fcf258889084d13b6..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/chromeos/login/oobe_back_button.css
+++ /dev/null
@@ -1,44 +0,0 @@
-/* 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. */
-
-#button {
-  --paper-button-flat-keyboard-focus: {
-    border-color: rgba(66, 133, 244, 0.4); /* #4284f4 */
-    border-radius: 2px;
-    border-style: solid;
-    border-width: 2px;
-  };
-  color: var(--google-blue-500);
-  font: var(--oobe-roboto-bold), sans-serif;
-  font-size: 12px;
-  height: 32px; /* = 28 + border (2px + 2px) */
-  margin: 0;
-  min-width: 92px; /* = 88 + border (2px + 2px) */
-  padding: 0;
-}
-
-#button:not([focused]) {
-  border-color: transparent;
-  border-radius: 2px;
-  border-style: solid;
-  border-width: 2px;
-}
-
-#text {
-  -webkit-padding-end: 16px;
-  text-transform: none;
-}
-
-iron-icon {
-  --iron-icon-height: 12px;
-  --iron-icon-width: 12px;
-  -webkit-padding-end: 8px;
-  -webkit-padding-start: 16px;
-}
-
-#button[disabled] #text,
-#button[disabled] iron-icon {
-  color: rgba(0, 0, 0, 0.34);
-}
-