Legacy foreground apps should continue getting scan results

Pre-M apps running in the foreground now get scan results. For legacy apps
running in the background, no results are returned and the error is logged.

Bug: 21852542
Change-Id: Ic7a91f34c6718c26f0dae30dade6a436fe1061af
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 4673579..85910aa 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -60,6 +60,7 @@
     <uses-permission android:name="android.permission.UPDATE_APP_OPS_STATS" />
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.DEVICE_POWER" />
+    <uses-permission android:name="android.permission.REAL_GET_TASKS" />
 
     <!-- For PBAP Owner Vcard Info -->
     <uses-permission android:name="android.permission.READ_PROFILE"/>