Added an api to uninstall a packge with active DAs

The api deactivates all the active admins in the package, then force
stops the package and starts the uninstall intent for the package. This
is intended to provide an easy way for a user to delete a misbehaving
Device Admin

Bug: b/22359208
cherrypick of Ic7ddd89ef6db53e7e76f805808d9e806100374db

Change-Id: I0d677839120c46f22231a7d6f9cf6630cb020227
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index 02eb115..f06979a 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -5722,4 +5722,32 @@
             return false;
         }
     }
+
+    /**
+     * @hide
+     * Returns whether the uninstall for {@code packageName} for the current user is in queue
+     * to be started
+     * @param packageName the package to check for
+     * @return whether the uninstall intent for {@code packageName} is pending
+     */
+    public boolean isUninstallInQueue(String packageName) {
+        try {
+            return mService.isUninstallInQueue(packageName);
+        } catch (RemoteException re) {
+            Log.w(TAG, REMOTE_EXCEPTION_MESSAGE, re);
+            return false;
+        }
+    }
+
+    /**
+     * @hide
+     * @param packageName the package containing active DAs to be uninstalled
+     */
+    public void uninstallPackageWithActiveAdmins(String packageName) {
+        try {
+            mService.uninstallPackageWithActiveAdmins(packageName);
+        } catch (RemoteException re) {
+            Log.w(TAG, REMOTE_EXCEPTION_MESSAGE, re);
+        }
+    }
 }