Update Bluetooth to use adaptive icon.

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<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">

  <foreground>

    <inset

      android:drawable="@*android:drawable/ic_bluetooth_share_icon"

      android:insetTop="25%"

      android:insetRight="25%"

      android:insetBottom="25%"

      android:insetLeft="25%" />

  </foreground>

  <background>

    <color android:color="@android:color/white" />

  </background>

</adaptive-icon>