[2/N] Add DIR_METADATA files to directories under //third_party/blink/web_tests/external

Generate DIR_METADATA files and remove metadata from OWNERS
files for directories under //third_party/blink/web_tests/external.

Bug: 1113033
Change-Id: I837881df95e8385c7fff5e23ea4975f103df401e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2573057
Commit-Queue: Josip Sokcevic <sokcevic@google.com>
Reviewed-by: Robert Ma <robertma@chromium.org>
Auto-Submit: Josip Sokcevic <sokcevic@google.com>
Cr-Commit-Position: refs/heads/master@{#834404}

third_party/blink/web_tests/external/wpt/css/css-backgrounds/OWNERS

-

third_party/blink/web_tests/external/wpt/css/css-color/OWNERS

-

third_party/blink/web_tests/external/wpt/css/css-display/DIR_METADATA

+monorail {
+  component: "Blink>Layout"
+}
+team_email: "layout-dev@chromium.org"
+wpt {
+  notify: YES
+}

third_party/blink/web_tests/external/wpt/css/css-display/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>Layout
-# WPT-NOTIFY: true
 emilio@chromium.org

third_party/blink/web_tests/external/wpt/css/css-flexbox/DIR_METADATA

+monorail {
+  component: "Blink>Layout>Flexbox"
+}
+team_email: "layout-dev@chromium.org"
+wpt {
+  notify: YES
+}

third_party/blink/web_tests/external/wpt/css/css-flexbox/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>Layout>Flexbox
-# WPT-NOTIFY: true
 cbiesinger@chromium.org

third_party/blink/web_tests/external/wpt/css/css-font-loading/DIR_METADATA

+monorail {
+  component: "Blink>Fonts"
+}
+team_email: "layout-dev@chromium.org"

third_party/blink/web_tests/external/wpt/css/css-font-loading/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>Fonts
 kojii@chromium.org
 ksakamoto@chromium.org

third_party/blink/web_tests/external/wpt/css/css-fonts/DIR_METADATA

+monorail {
+  component: "Blink>Fonts"
+}
+team_email: "layout-dev@chromium.org"

third_party/blink/web_tests/external/wpt/css/css-fonts/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>Fonts
 drott@chromium.org
 kojii@chromium.org

third_party/blink/web_tests/external/wpt/css/css-grid/DIR_METADATA

+monorail {
+  component: "Blink>Layout>Grid"
+}
+team_email: "layout-dev@chromium.org"
+wpt {
+  notify: YES
+}

third_party/blink/web_tests/external/wpt/css/css-grid/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>Layout>Grid
-# WPT-NOTIFY: true
 rego@igalia.com

third_party/blink/web_tests/external/wpt/css/css-layout-api/DIR_METADATA

+monorail {
+  component: "Blink>Layout"
+}
+team_email: "layout-dev@chromium.org"
+wpt {
+  notify: YES
+}

third_party/blink/web_tests/external/wpt/css/css-layout-api/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>Layout
-# WPT-NOTIFY: true
 file://third_party/blink/renderer/core/layout/ng/custom/OWNERS

third_party/blink/web_tests/external/wpt/css/css-logical/DIR_METADATA

+monorail {
+  component: "Blink>Layout"
+}
+team_email: "layout-dev@chromium.org"
+wpt {
+  notify: YES
+}

third_party/blink/web_tests/external/wpt/css/css-logical/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>Layout
-# WPT-NOTIFY: true

third_party/blink/web_tests/external/wpt/css/css-masking/DIR_METADATA

+monorail {
+  component: "Blink>Paint"
+}
+team_email: "paint-dev@chromium.org"
+wpt {
+  notify: YES
+}

third_party/blink/web_tests/external/wpt/css/css-masking/OWNERS

-# TEAM: paint-dev@chromium.org
-# COMPONENT: Blink>Paint
-# WPT-NOTIFY: true

third_party/blink/web_tests/external/wpt/css/css-multicol/DIR_METADATA

+monorail {
+  component: "Blink>Layout>MultiCol"
+}
+team_email: "layout-dev@chromium.org"
+wpt {
+  notify: YES
+}

third_party/blink/web_tests/external/wpt/css/css-multicol/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>Layout>MultiCol
-# WPT-NOTIFY: true
 mstensho@chromium.org

third_party/blink/web_tests/external/wpt/css/css-namespaces/DIR_METADATA

+monorail {
+  component: "Blink>CSS"
+}
+team_email: "layout-dev@chromium.org"

third_party/blink/web_tests/external/wpt/css/css-namespaces/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>CSS
 futhark@chromium.org
 andruud@chromium.org
 ericwilligers@chromium.org

third_party/blink/web_tests/external/wpt/css/css-position/DIR_METADATA

+monorail {
+  component: "Blink>Layout"
+}
+team_email: "layout-dev@chromium.org"
+wpt {
+  notify: YES
+}

third_party/blink/web_tests/external/wpt/css/css-position/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>Layout
-# WPT-NOTIFY: true
 smcgruer@chromium.org

third_party/blink/web_tests/external/wpt/css/css-properties-values-api/DIR_METADATA

+monorail {
+  component: "Blink>CSS"
+}
+team_email: "layout-dev@chromium.org"
+wpt {
+  notify: YES
+}

third_party/blink/web_tests/external/wpt/css/css-properties-values-api/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>CSS
-# WPT-NOTIFY: true
 andruud@chromium.org

third_party/blink/web_tests/external/wpt/css/css-scoping/DIR_METADATA

+monorail {
+  component: "Blink>CSS"
+}
+team_email: "layout-dev@chromium.org"

third_party/blink/web_tests/external/wpt/css/css-scoping/OWNERS

-# TEAM: layout-dev@chromium.org
-# COMPONENT: Blink>CSS
 kojii@chromium.org