chrome/android/java/res/values-v21/styles.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2014 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. -->

<resources>
    <style name="NavigationPopupDialog" parent="Widget.AppCompat.Light.ListPopupWindow">
        <item name="android:popupElevation">0dp</item>
    </style>

    <style name="Base.V21.Theme.Chromium" parent="Base.V17.Theme.Chromium">
        <!-- Set android alert dialog attributes because the context menu dialog is
             OS-dependent. Not setting alertDialogTheme pre-v21 because the window background
             causes bad visual states with alert dialog list. -->
        <item name="android:alertDialogTheme">@style/Theme.Chromium.AlertDialog</item>
    </style>
    <style name="Base.Theme.Chromium" parent="Base.V21.Theme.Chromium" />

    <!-- Theme variation for low-end devices.

        Since ChromeActivities are not HW accelerated, they don't get fancy
        material shadows for popups. This theme sets drawable with pre-baked
        shadows to those popups to make them look better.
        '*_bg_tinted' are a 9-patchs similar to 'abc_popup_background_mtrl_mult'
        drawable from Android support library, where it's used to simulate
        material design on earlier Android versions.
    -->
    <style name="ListPopupWindow.LowEnd" parent="android:Widget.Material.Light.ListPopupWindow">
        <item name="android:popupBackground">@drawable/menu_bg_tinted</item>
    </style>
    <style name="Spinner.LowEnd" parent="android:Widget.Material.Light.Spinner">
        <item name="android:popupBackground">@drawable/dialog_bg_tinted</item>
    </style>
    <style name="AutoCompleteTextView.LowEnd" parent="android:Widget.Material.Light.AutoCompleteTextView">
        <item name="android:popupBackground">@drawable/menu_bg_tinted</item>
    </style>
    <style name="Theme.Chromium.WithWindowAnimation.LowEnd"
        parent="Theme.Chromium.WithWindowAnimation">
        <item name="android:popupWindowStyle">@style/ListPopupWindow.LowEnd</item>
        <item name="android:listPopupWindowStyle">@style/ListPopupWindow.LowEnd</item>
        <item name="android:spinnerStyle">@style/Spinner.LowEnd</item>
        <item name="android:autoCompleteTextViewStyle">@style/AutoCompleteTextView.LowEnd</item>

        <!-- Without HW acceleration the default text cursor looks weird (top
             half is way brighter than the bottom), so we use our own. -->
        <item name="android:textCursorDrawable">@drawable/text_cursor_lowend</item>
    </style>

    <!-- Match the fontFamily in ui/android/java/res/values-v21/styles.xml -->
    <style name="TextAppearance.FreFirstFrameButton" parent="TextAppearance.Button.Text.Filled">
        <item name="android:fontFamily">sans-serif-medium</item>
    </style>
  </resources>