Add a flag to enable/disable LooperStats collection

Test: Manually tested

Change-Id: I9cd4c819297ea34ab59c3cf9cfd11136987acc22
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 517cf4d..e84aed1 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -282,6 +282,7 @@
                     Settings.Global.LOCATION_GLOBAL_KILL_SWITCH,
                     Settings.Global.LOCATION_SETTINGS_LINK_TO_PERMISSIONS_ENABLED,
                     Settings.Global.LOCK_SOUND,
+                    Settings.Global.LOOPER_STATS,
                     Settings.Global.LOW_BATTERY_SOUND,
                     Settings.Global.LOW_BATTERY_SOUND_TIMEOUT,
                     Settings.Global.LOW_POWER_MODE,