media: Enable ProtectedMediaIdentifierPermissionContext on ChromeOS.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index cec3910dd0ae635251dee02be7ea473e7094e0eb..6b68439ba09825d7822e7a7b2f9fd9e1102d167b 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -13347,7 +13347,10 @@ Some features may be unavailable.  Please check that the profile exists and you
       </message>
 
       <!-- Proteced media identifier permission infobar -->
-      <if expr="is_android">
+      <if expr="is_android or chromeos">
+        <message name="IDS_PROTECTED_MEDIA_IDENTIFIER_PERMISSION_FRAGMENT" desc="Permission fragment shown in the permissions bubble when a web page requests access to the computer's protected media identifier.">
+          Protected content identifier.
+        </message>
         <message name="IDS_PROTECTED_MEDIA_IDENTIFIER_INFOBAR_QUESTION" desc="Question asked on the infobar whenever URL wants to access protected media identifier. It shows the origin of the URL.">
           <ph name="URL">$1<ex>https://www.youtube.com</ex></ph> needs to uniquely identify your device to play premium content.
         </message>