Add DIR_METADATA files to //services

Generate DIR_METADATA files and remove metadata from OWNERS
files for //services.

R=jam@chromium.org

Bug: 1113033
Change-Id: Iecbb630beab2b961a7bc4292a3f5185325a1a132
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2473338
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Auto-Submit: Edward Lesmes <ehmaldonado@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818006}

diff --git a/services/tracing/DIR_METADATA b/services/tracing/DIR_METADATA
new file mode 100644
index 0000000..2b8a972
--- /dev/null
+++ b/services/tracing/DIR_METADATA

@@ -0,0 +1,11 @@
+# Metadata information for this directory.
+#
+# For more information on DIR_METADATA files, see:
+#   https://source.chromium.org/chromium/infra/infra/+/master:go/src/infra/tools/dirmd/README.md
+#
+# For the schema of this file, see Metadata message:
+#   https://source.chromium.org/chromium/infra/infra/+/master:go/src/infra/tools/dirmd/proto/dir_metadata.proto
+
+monorail {
+  component: "Speed>Tracing"
+}
\ No newline at end of file