Fix 3197205: Minor edits to device policy admin strings and documentation

Change-Id: I3788772c375b916752cd8a98ff5d3751448e4334
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index 3f3aa74..036443d 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -730,8 +730,10 @@
     }
 
     /**
-     * Get the current password expiration timeout for the given admin or the aggregate
-     * of all admins if admin is null.
+     * Get the password expiration timeout for the given admin. The expiration timeout is the
+     * recurring expiration timeout provided in the call to
+     * {@link #setPasswordExpirationTimeout(ComponentName, long)} for the given admin or the
+     * aggregate of all policy administrators if admin is null.
      *
      * @param admin The name of the admin component to check, or null to aggregate all admins.
      * @return The timeout for the given admin or the minimum of all timeouts
@@ -749,7 +751,9 @@
 
     /**
      * Get the current password expiration time for the given admin or an aggregate of
-     * all admins if admin is null.
+     * all admins if admin is null. If the password is expired, this will return the time since
+     * the password expired as a negative number.  If admin is null, then a composite of all
+     * expiration timeouts is returned - which will be the minimum of all timeouts.
      *
      * @param admin The name of the admin component to check, or null to aggregate all admins.
      * @return The password expiration time, in ms.