Add statslog logging for hidden api usage

Statslog logging is done alongside the old logging, with different
sampling rates.

Test: cts-tradefed run cts-dev -m CtsStatsdHostTestCases -t \
        android.cts.statsd.atom.UidAtomTests#testHiddenApiUsed
Bug: 119217680
Change-Id: If7c38eaee3a3c08434c2e4f2dac45c659ea9cb12
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 23cd963..69632c1 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -287,6 +287,7 @@
                     Settings.Global.HDMI_SYSTEM_AUDIO_CONTROL_ENABLED,
                     Settings.Global.HEADS_UP_NOTIFICATIONS_ENABLED,
                     Settings.Global.HIDDEN_API_ACCESS_LOG_SAMPLING_RATE,
+                    Settings.Global.HIDDEN_API_ACCESS_STATSLOG_SAMPLING_RATE,
                     Settings.Global.HIDDEN_API_POLICY,
                     Settings.Global.HIDE_ERROR_DIALOGS,
                     Settings.Global.HTTP_PROXY,