appcompat/res/values-v22/themes_base.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2015 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->

<resources>

    <style name="Base.Theme.AppCompat" parent="Base.V22.Theme.AppCompat" />
    <style name="Base.Theme.AppCompat.Light" parent="Base.V22.Theme.AppCompat.Light" />

    <style name="Base.V22.Theme.AppCompat" parent="Base.V21.Theme.AppCompat">
        <item name="actionModeShareDrawable">?android:attr/actionModeShareDrawable</item>
        <!-- We use the framework provided edit text background on 22+ -->
        <item name="editTextBackground">?android:attr/editTextBackground</item>
    </style>

    <style name="Base.V22.Theme.AppCompat.Light" parent="Base.V21.Theme.AppCompat.Light">
        <item name="actionModeShareDrawable">?android:attr/actionModeShareDrawable</item>
        <!-- We use the framework provided edit text background on 22+ -->
        <item name="editTextBackground">?android:attr/editTextBackground</item>
    </style>

</resources>