need to save the mLongPressedAccount in the instance data

Change-Id: I10458dcc4c539efa64b620ba998b09c14cead28e
http://b/issue?id=2527346

apps/Development/src/com/android/development/AccountsTester.java

@@ -221,6 +221,14 @@ public class AccountsTester extends Activity implements OnAccountsUpdateListener
         mLongPressedAccount = holder.account;
     }
 
+    protected void onSaveInstanceState(Bundle outState) {
+        outState.putParcelable("account", mLongPressedAccount);
+    }
+
+    protected void onRestoreInstanceState(Bundle savedInstanceState) {
+        mLongPressedAccount = savedInstanceState.getParcelable("account");
+    }
+
     @Override
     public boolean onContextItemSelected(MenuItem item) {
         if (item.getItemId() == R.id.accounts_tester_remove_account) {