add auto_user_switch metric;

the metric measures a time diff between start user
and carlauncher fully drawn events;

Bug: 155434907
Test: tools/diff_test_trace_processor.py out/linux/trace_processor_shell --name-filter=".*multiuser.*"

Change-Id: I0dcdcc8a37b4019d6d145055b8bf8e5f746c6cc8
diff --git a/Android.bp b/Android.bp
index dec60eb..88026d5 100644
--- a/Android.bp
+++ b/Android.bp
@@ -11668,6 +11668,7 @@
     srcs: [
         "src/trace_processor/metrics/sql/android/ad_services_metric.sql",
         "src/trace_processor/metrics/sql/android/android_anr.sql",
+        "src/trace_processor/metrics/sql/android/android_auto_multiuser.sql",
         "src/trace_processor/metrics/sql/android/android_batt.sql",
         "src/trace_processor/metrics/sql/android/android_binder.sql",
         "src/trace_processor/metrics/sql/android/android_blocking_calls_cuj_metric.sql",