Add content description for brightness slider

        android:paddingBottom="16dp"

        android:thumb="@drawable/ic_brightness_thumb"

        android:splitTrack="false"

        android:contentDescription="@string/accessibility_brightness"

        />

    <TextView

        android:id="@+id/label"

    <!-- Content description of zen mode time condition minus button (not shown on the screen). [CHAR LIMIT=NONE] -->

    <string name="accessibility_quick_settings_less_time">Less time</string>

    <!-- Content description of the display brightness slider (not shown on the screen). [CHAR LIMIT=NONE] -->

    <string name="accessibility_brightness">Display brightness</string>

    <!-- Title of dialog shown when 2G-3G data usage has exceeded limit and has been disabled. [CHAR LIMIT=48] -->

    <string name="data_usage_disabled_dialog_3g_title">2G-3G data is off</string>

    <!-- Title of dialog shown when 4G data usage has exceeded limit and has been disabled. [CHAR LIMIT=48] -->