Make get_accounts a runtime permissions again

The permission was lowered in protection level to normal
allowing apps to assess migration strategy. This change
makes the permission dangerous again allowing apps to
implement this strategy.

bug:22385299

Change-Id: I3694c06236a33b97f63761b48745b1df654a2bf4
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index ba51b23..a6d02dd 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -1041,7 +1041,7 @@
     -->
     <permission android:name="android.permission.GET_ACCOUNTS"
         android:permissionGroup="android.permission-group.CONTACTS"
-        android:protectionLevel="normal"
+        android:protectionLevel="dangerous"
         android:description="@string/permdesc_getAccounts"
         android:label="@string/permlab_getAccounts" />