Add DIR_METADATA files to //android_webview

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

Bug: 1113033
Change-Id: I5dcc8599dc972c2631a7bd9d0e26d11e1fe68d54
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2335659Reviewed-by: Changwan Ryu <changwan@chromium.org>
Reviewed-by: Nate Fischer <ntfschr@chromium.org>
Commit-Queue: Norman Rosas <normando@google.com>
Auto-Submit: Norman Rosas <normando@google.com>
Cr-Commit-Position: refs/heads/master@{#795792}

android_webview/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: "Mobile>WebView"
+}
+team_email: "android-webview-dev@chromium.org"
+os: ANDROID

android_webview/OWNERS

@@ -12,6 +12,3 @@ per-file *.gn=ntfschr@chromium.org
 
 # Translation artifacts:
 per-file *.xtb=file://tools/translation/TRANSLATION_OWNERS
-
-# TEAM: android-webview-dev@chromium.org
-# COMPONENT: Mobile>WebView

android_webview/browser/metrics/OWNERS

 ntfschr@chromium.org
-
-# TEAM: android-webview-dev@chromium.org
-# COMPONENT: Mobile>WebView

android_webview/tools/OWNERS

 ntfschr@chromium.org
 
 per-file apk_merger.py=benmason@chromium.org
-
-# COMPONENT: Mobile>WebView

android_webview/tools/cts_archive/OWNERS

 aluo@chromium.org
-
-# COMPONENT: Mobile>WebView

android_webview/tools/cts_config/OWNERS

 aluo@chromium.org
-
-# COMPONENT: Mobile>WebView

android_webview/tools/system_webview_shell/OWNERS

 timvolodine@chromium.org
-
-# COMPONENT: Mobile>WebView

android_webview/tools/system_webview_shell/apk/OWNERS

 timvolodine@chromium.org
-
-# COMPONENT: Mobile>WebView

android_webview/tools/system_webview_shell/layout_tests/OWNERS

 timvolodine@chromium.org
-
-# COMPONENT: Mobile>WebView