Unknown options in extension manifest file are silently ignored

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 f9674d7ee390cbc2b0831d100d3e2d7f19a32816..7fc3b3c2c1d35fb80b10709dd6009ae460a55d2f 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4532,9 +4532,12 @@ Update checks have repeatedly failed for the extension "<ph name="EXTENSION_NAME
       <message name="IDS_EXTENSIONS_INSPECT_VIEWS" desc="The text for the label in front of the links to inspect views (some of which may not be loaded yet).">
         Inspect views:
       </message>
-      <message name="IDS_EXTENSIONS_INSTALL_WARNINGS" desc="The text which says that an extension has warnings when it was installed..">
+      <message name="IDS_EXTENSIONS_INSTALL_WARNINGS" desc="The text which says that an extension has warnings when it was installed.">
         There were warnings when trying to install this extension:
       </message>
+      <message name="IDS_EXTENSIONS_UNRECOGNIZED_MANIFEST_KEYS" desc="The list of unrecognized keys in the extension's manifest.json.">
+        Unrecognized manifest keys:
+      </message>
       <message name="IDS_EXTENSIONS_ENABLE" desc="The link for enabling extensions.">
         Enable
       </message>
@@ -11657,23 +11660,23 @@ Some features may be unavailable.  Please check that the profile exists and you
         <message name="IDS_GOOGLE_MAILTO_HANDLER_URL">
           https:////mail.google.com//mail//?extsrc=mailto&amp;url=%s
         </message>
-	
+
         <!-- The name for the Google mailto service. -->
         <message name="IDS_GOOGLE_MAILTO_HANDLER_NAME">
           Google.com Mail
         </message>
-	
+
         <!-- The URL for the Google webcal service. -->
         <message name="IDS_GOOGLE_WEBCAL_HANDLER_URL">
           https:////www.google.com//calendar//render?cid=%s
         </message>
-	
+
         <!-- The name for the Google webcal service. -->
         <message name="IDS_GOOGLE_WEBCAL_HANDLER_NAME">
           Google Calendar
         </message>
       </if>
-     
+
       <!-- Sync promo page chrome://signin -->
       <message name="IDS_SYNC_PROMO_TAB_TITLE" desc="The title of the sync promo tab.">
         Sign in