Stop including roboto.woff files on Android

ui/webui/resources/css/roboto.css

Index: ui/webui/resources/css/roboto.css
diff --git a/ui/webui/resources/css/roboto.css b/ui/webui/resources/css/roboto.css
index 00cbd32a078bb5875134dd74a8316ad20004b0bc..af0bdbc6a9762e73882e4547cdbbed99432bb4ce 100644
--- a/ui/webui/resources/css/roboto.css
+++ b/ui/webui/resources/css/roboto.css
@@ -2,7 +2,7 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
-<if expr="not chromeos">
+<if expr="not chromeos and not is_android">
 @font-face {
   font-family: 'Roboto';
   font-style: normal;