Material PDF: Style audit and cleanup

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
new file mode 100644
index 0000000000000000000000000000000000000000..6611e9e09c707e331c33bbaf64f755213bfdf540
--- /dev/null
+++ b/chrome/browser/resources/pdf/elements/shared-icon-style.css
@@ -0,0 +1,15 @@
+/* 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: 20px;
+    padding: 6px;
+    width: 20px;
+  };
+  --paper-icon-button-ink-color: rgb(189, 189, 189);
+  --viewer-icon-ink-color: rgb(189, 189, 189);
+}