Merge "add permission check for exported activity" into rvc-qpr-dev

            android:name="com.android.carrierdefaultapp.CaptivePortalLoginActivity"

            android:label="@string/action_bar_label"

            android:exported="true"

            android:permission="android.permission.MODIFY_PHONE_STATE"

            android:theme="@style/AppTheme"

            android:configChanges="keyboardHidden|orientation|screenSize">

            <intent-filter>