packages/SystemUI/res/layout/screen_record_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:clipChildren="false"
              android:clipToPadding="false"
              android:gravity="top"
              android:orientation="vertical"
              android:padding="@dimen/global_actions_padding"
              android:background="@drawable/rounded_bg_full">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <CheckBox
            android:id="@+id/checkbox_mic"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="@string/screenrecord_mic_label"/>
        <CheckBox
            android:id="@+id/checkbox_taps"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="@string/screenrecord_taps_label"/>
        <Button
            android:id="@+id/record_button"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="@string/screenrecord_start_label"
        />
    </LinearLayout>

</LinearLayout>