First draft of native StatsEvent API

Test: m -j libstatssocket compiles
Change-Id: I874968d4f77a5990764100123794b923847e5eb5
Merged-In: I0da9740d29749d79d14be39e5949b98c58df704d
diff --git a/libstats/Android.bp b/libstats/Android.bp
index f5ee1da..c5d05ec 100644
--- a/libstats/Android.bp
+++ b/libstats/Android.bp
@@ -22,6 +22,7 @@
     srcs: [
         "stats_event_list.c",
         "statsd_writer.c",
+	"stats_event.c",
     ],
     host_supported: true,
     cflags: [