Added DIR_METADATA files and removed duplicated

metadata from OWNERS files in the next repos:
//components/cast...
//components/certificate..
//components/chrome_cleaner
//components/client...

Bug: 1113033
Change-Id: I67561c5b8a8796ca6307fd088855d24ac089e317
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2564389
Auto-Submit: Norman Rosas <normando@google.com>
Reviewed-by: mark a. foltz <mfoltz@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Norman Rosas <normando@google.com>
Cr-Commit-Position: refs/heads/master@{#833866}

components/cast/DIR_METADATA

+monorail {
+  component: "Chromecast"
+}

components/cast/OWNERS

 file://build/fuchsia/OWNERS
 file://chromecast/OWNERS
-
-# COMPONENT: Chromecast

components/cast_certificate/DIR_METADATA

+monorail {
+  component: "Chromecast"
+}

components/cast_certificate/OWNERS

 file://chromecast/OWNERS
 dougsteed@chromium.org
-
-# COMPONENT: Chromecast

components/cast_channel/DIR_METADATA

+monorail {
+  component: "Internals>Cast>Providers"
+}

components/cast_channel/OWNERS

 mfoltz@chromium.org
-
-# COMPONENT: Internals>Cast>Providers

components/certificate_matching/DIR_METADATA

+monorail {
+  component: "Internals>Network>Certificate"
+}

components/certificate_matching/OWNERS

 file://chromeos/policy/OWNERS
 file://chromeos/network/OWNERS
-
-# COMPONENT: Internals>Network>Certificate

components/certificate_transparency/DIR_METADATA

+monorail {
+  component: "Internals>Network>CertTrans"
+}
+
+team_email: "net-dev@chromium.org"

components/certificate_transparency/OWNERS

@@ -3,6 +3,3 @@ rsleevi@chromium.org
 
 # Secondary
 file://net/OWNERS
-
-# TEAM: net-dev@chromium.org
-# COMPONENT: Internals>Network>CertTrans

components/chrome_cleaner/DIR_METADATA

+monorail {
+  component: "UI>Browser>Preferences>Protector"
+}
+
+team_email: "security-dev@chromium.org"

components/chrome_cleaner/OWNERS

 file://chrome/chrome_cleaner/OWNERS
-
-# TEAM: security-dev@chromium.org
-# COMPONENT: UI>Browser>Preferences>Protector

components/chrome_cleaner/public/proto/DIR_METADATA

+monorail {
+  component: "UI>Browser>Preferences>Protector"
+}
+
+team_email: "security-dev@chromium.org"

components/chrome_cleaner/public/proto/OWNERS

@@ -2,6 +2,3 @@
 # interface.
 per-file *.proto=set noparent
 per-file *.proto=file://ipc/SECURITY_OWNERS
-
-# TEAM: security-dev@chromium.org
-# COMPONENT: UI>Browser>Preferences>Protector

components/client_hints/DIR_METADATA

+monorail {
+  component: "Blink>Loader"
+}

components/client_hints/OWNERS

@@ -2,5 +2,3 @@ yoavweiss@chromium.org
 tbansal@chromium.org
 ryansturm@chromium.org
 aarontag@chromium.org
-
-# COMPONENT: Blink>Loader

components/client_update_protocol/DIR_METADATA

+monorail {
+  component: "Internals>Installer"
+}
+
+team_email: "chrome-updates-dev@chromium.org"

components/client_update_protocol/OWNERS

 sorin@chromium.org
 waffles@chromium.org
-# COMPONENT: Internals>Installer
-# TEAM: chrome-updates-dev@chromium.org