Add DIR_METADATA files to //tools

Generate DIR_METADATA files and remove metatada from OWNERS files for //tools.

Bug: 1113033
Change-Id: I4ee4da92c3c51ad639a17c96265ab34c1fd94944
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2450742
Reviewed-by: Dirk Pranke <dpranke@google.com>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814250}
GitOrigin-RevId: 5b9ef558f7d2260c2133287c0254ad286e2afe86
diff --git a/DIR_METADATA b/DIR_METADATA
new file mode 100644
index 0000000..5faa339
--- /dev/null
+++ b/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: "Infra>Platform"
+}
\ No newline at end of file
diff --git a/OWNERS b/OWNERS
index e1411a3..ed760dc 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,4 +1,3 @@
 maruel@chromium.org
 tandrii@google.com
-vadimsh@chromium.org
-# COMPONENT: Infra>Platform
+vadimsh@chromium.org
\ No newline at end of file