The Tor Browser / file revision

 <?xml version="1.0" encoding="utf-8"?>

 <!-- This Source Code Form is subject to the terms of the Mozilla Public

    - License, v. 2.0. If a copy of the MPL was not distributed with this

    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

 <ImageButton xmlns:android="http://schemas.android.com/apk/res/android"

              android:layout_width="@dimen/tabs_panel_indicator_width"

              android:layout_height="@dimen/browser_toolbar_height"

              android:minWidth="@dimen/tabs_panel_indicator_width"

              android:paddingTop="@dimen/browser_toolbar_button_padding"

              android:paddingBottom="@dimen/browser_toolbar_button_padding"

              android:background="@drawable/tabs_panel_indicator"/>