PDF: Tweak font-size and colors to more closely match other MD WebUI

chrome/browser/resources/pdf/elements/shared-icon-style.css

Index: chrome/browser/resources/pdf/elements/shared-icon-style.css
diff --git a/chrome/browser/resources/pdf/elements/shared-icon-style.css b/chrome/browser/resources/pdf/elements/shared-icon-style.css
deleted file mode 100644
index 59037556c74c2c35737b257c23bdf713e904c0ed..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/pdf/elements/shared-icon-style.css
+++ /dev/null
@@ -1,15 +0,0 @@
-/* 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. */
-
-:root {
-  --iron-icon-height: 20px;
-  --iron-icon-width: 20px;
-  --paper-icon-button: {
-    height: 32px;
-    padding: 6px;
-    width: 32px;
-  };
-  --paper-icon-button-ink-color: rgb(189, 189, 189);
-  --viewer-icon-ink-color: rgb(189, 189, 189);
-}