Add trace duration and rename the metadata proto

Change-Id: I1632247f638aebdd5c2723d3d2976bb049cb8ff9
diff --git a/Android.bp b/Android.bp
index 3d27af3..2ae049c 100644
--- a/Android.bp
+++ b/Android.bp
@@ -37,7 +37,7 @@
     "src/trace_processor/metrics/android/process_unagg_mem_view.sql",
     "src/trace_processor/metrics/android/span_view_stats.sql",
     "src/trace_processor/metrics/android/upid_span_view.sql",
-    "src/trace_processor/metrics/error_statistics.sql",
+    "src/trace_processor/metrics/trace_metadata.sql",
   ],
   cmd: "$(location tools/gen_merged_sql_metrics.py) --cpp_out=$(out) $(in)",
   out: [