Updating batterystats report version.

http://ag/3607190 changed the value of DATA_CONNECTION_OTHER, which
breaks parsing, so we need to update the report version.

Deferred job metrics added in http://ag/3628360.

Bug: 67013665
Bug: 70297451
Test: N/A
Change-Id: I3361733b10fb55b75d4ce618d8a87ab8c92e5836
diff --git a/core/java/android/os/BatteryStats.java b/core/java/android/os/BatteryStats.java
index 7cd58e8..835525c 100644
--- a/core/java/android/os/BatteryStats.java
+++ b/core/java/android/os/BatteryStats.java
@@ -240,8 +240,11 @@
      * New in version 30:
      *   - Uid.PROCESS_STATE_FOREGROUND_SERVICE only tracks
      *   ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE.
+     * New in version 31:
+     *   - New cellular network types.
+     *   - Deferred job metrics.
      */
-    static final int CHECKIN_VERSION = 30;
+    static final int CHECKIN_VERSION = 31;
 
     /**
      * Old version, we hit 9 and ran out of room, need to remove.