Improve error pages on client certificate failures.

components/error_page_strings.grdp

Index: components/error_page_strings.grdp
diff --git a/components/error_page_strings.grdp b/components/error_page_strings.grdp
index c732fab8dd94cd7283c18e34c11cd0efb4d22aba..a30640b33884409450e2a112cf19de5c6befce83 100644
--- a/components/error_page_strings.grdp
+++ b/components/error_page_strings.grdp
@@ -255,7 +255,7 @@
     This site can’t provide a secure connection
   </message>
   <message name="IDS_ERRORPAGES_SUMMARY_BAD_SSL_CLIENT_AUTH_CERT" desc="Summary in the error page for SSL client certificate authentication failure.">
-    <ph name="HOST_NAME">&lt;strong jscontent="hostName"&gt;&lt;/strong&gt;<ex>www.whatever.com</ex></ph> didn’t accept your login certificate, or your login certificate may have expired.
+    <ph name="HOST_NAME">&lt;strong jscontent="hostName"&gt;&lt;/strong&gt;<ex>www.whatever.com</ex></ph> didn’t accept your login certificate, or one may not have been provided.
   </message>
   <message name="IDS_ERRORPAGES_SUMMARY_BLOCKED_BY_EXTENSION" desc="Summary in the error page when an extension blocks a request.">
     Requests to the server have been blocked by an extension.