Add DIR_METADATA files to //docs

Add Generate DIR_METADATA files and remove metadata from OWNERS
files for //docs.

Bug: 1113033
Change-Id: Ibd798892dcc522ce2363f85e53860259194eaa7c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2454498
Commit-Queue: Dirk Pranke <[email protected]>
Reviewed-by: Dirk Pranke <[email protected]>
Auto-Submit: Edward Lesmes <[email protected]>
Cr-Commit-Position: refs/heads/master@{#815366}
diff --git a/docs/design/DIR_METADATA b/docs/design/DIR_METADATA
new file mode 100644
index 0000000..fb07a25
--- /dev/null
+++ b/docs/design/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: "Internals>Core"
+}
\ No newline at end of file