Work on issue #21589105: Scope WRITE_SETTINGS and SYSTEM_ALERT_WINDOW...

...to an explicit toggle to enable in Settings

Add a new permission flag, saying the permission can be automatically
granted to pre-api-23 apps.  Apply this to SYSTEM_ALERT_WINDOW.

Change-Id: I24a0ceabe7e9f5e458a864d30eda2696ad14a699
diff --git a/tests/ActivityTests/AndroidManifest.xml b/tests/ActivityTests/AndroidManifest.xml
index dae7cc5..73cb432 100644
--- a/tests/ActivityTests/AndroidManifest.xml
+++ b/tests/ActivityTests/AndroidManifest.xml
@@ -24,6 +24,7 @@
     <uses-permission android:name="android.permission.INTERACT_ACROSS_USERS_FULL" />
     <uses-permission android:name="android.permission.MANAGE_USERS" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
+    <uses-sdk android:targetSdkVersion="22" />
     <application android:label="ActivityTest">
         <activity android:name="ActivityTestMain">
             <intent-filter>