Merge "Bump up the protection level of the CLEAR_APP_CACHE permission" into mnc-dev

    <!-- Allows an application to clear the caches of all installed

         applications on the device.  -->

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

        android:protectionLevel="dangerous" />

        android:protectionLevel="signatureOrSystem" />

    <!-- @SystemApi Allows an application to use any media decoder when decoding for playback

         @hide -->