regenerate metrics descriptor

Missed in https://r.android.com/2057637

Change-Id: Ia30e266e93f82384d4b36cff249394b81811112c

python/perfetto/trace_processor/metrics.descriptor

diff --git a/python/perfetto/trace_processor/metrics.descriptor b/python/perfetto/trace_processor/metrics.descriptor
index 059acd2..a91d7a9 100644
--- a/python/perfetto/trace_processor/metrics.descriptor
+++ b/python/perfetto/trace_processor/metrics.descriptor
Binary files differ