Documenting the way LOADER_USAGE_STATS permission work.

         set of pages referenced over time.

         <p>Declaring the permission implies intention to use the API and the user of the

         device can grant permission through the Settings application.

         <p>Protection level: signature|privileged|appop -->

         <p>Protection level: signature|privileged|appop

         <p>A data loader has to be the one which provides data to install an app.

         <p>A data loader has to have both permission:LOADER_USAGE_STATS AND

         appop:LOADER_USAGE_STATS allowed to be able to access the read logs. -->

    <permission android:name="android.permission.LOADER_USAGE_STATS"

        android:protectionLevel="signature|privileged|appop" />

    <uses-permission android:name="android.permission.LOADER_USAGE_STATS" />