Re-SystemApi some fields/method that aren't in use.

Bug: 26816334
Change-Id: Ib01e7856cd65e294c018017c600f8b3dce2be844
diff --git a/api/test-removed.txt b/api/test-removed.txt
index 2c6729d..0bf6594 100644
--- a/api/test-removed.txt
+++ b/api/test-removed.txt
@@ -199,6 +199,14 @@
 
 }
 
+package android.service.notification {
+
+  public abstract class ConditionProviderService extends android.app.Service {
+    method public void onRequestConditions(int);
+  }
+
+}
+
 package android.test.mock {
 
   public deprecated class MockPackageManager extends android.content.pm.PackageManager {