Add DIR_METADATA files to //weblayer

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

Bug: 1113033
Change-Id: I60344a039c708f581e6e98c65f41c866cb0d2958
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2450701Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Cr-Commit-Position: refs/heads/master@{#813992}

weblayer/DIR_METADATA

+# 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: "Internals>WebLayer"
+}
+team_email: "weblayer-dev@chromium.org"
\ No newline at end of file

weblayer/OWNERS

@@ -8,6 +8,3 @@ nator@chromium.org
 sky@chromium.org
 timvolodine@chromium.org
 tobiasjs@chromium.org
-
-# TEAM: weblayer-dev@chromium.org
-# COMPONENT: Internals>WebLayer