Add an API in update_engine to switch the slot back and forth am: da607a35bd am: c359236ab2 am: cc2fd47f4e am: 4ce1bcc700

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1697663

Change-Id: I8ff6f6c82c899bb96213761005f1c226850279db
GitOrigin-RevId: b0bf0e3753c7a261670b0066dd6b403655d1e5f6
diff --git a/binder_bindings/android/os/IUpdateEngine.aidl b/binder_bindings/android/os/IUpdateEngine.aidl
index c9580da..4043b1a 100644
--- a/binder_bindings/android/os/IUpdateEngine.aidl
+++ b/binder_bindings/android/os/IUpdateEngine.aidl
@@ -44,6 +44,11 @@
   /** @hide */
   void resetStatus();
   /** @hide */
+  void setShouldSwitchSlotOnReboot(in String metadataFilename);
+  /** @hide */
+  void resetShouldSwitchSlotOnReboot();
+
+  /** @hide */
   boolean verifyPayloadApplicable(in String metadataFilename);
   /**
    * Allocate space on userdata partition.