introduce GET_PASSWORD_PRIVILEDGED permission.

That will be used to filter in passwords for Session based
AccountManager flows.

Bug: 27590532
Change-Id: I4a6d0540bcff186e416351a6f719600ce35d86a0
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index e03183b..6aa0dcf 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -2004,6 +2004,11 @@
     <permission android:name="android.permission.GET_ACCOUNTS_PRIVILEGED"
         android:protectionLevel="signature|privileged" />
 
+    <!-- @SystemApi Allows but does not guarantee access to user passwords at the conclusion of add
+         account -->
+    <permission android:name="android.permission.GET_PASSWORD_PRIVILEGED"
+        android:protectionLevel="signature|privileged" />
+
     <!-- @SystemApi Allows applications to RW to diagnostic resources.
     <p>Not for use by third-party applications. -->
     <permission android:name="android.permission.DIAGNOSTIC"