Fix "security certificate expired 0 day(s) ago" bug

chrome/browser/ssl/ssl_error_info.cc

Index: chrome/browser/ssl/ssl_error_info.cc
diff --git a/chrome/browser/ssl/ssl_error_info.cc b/chrome/browser/ssl/ssl_error_info.cc
index d4ad26d975429a0ce6797b01d9b3ac25cb05d7d3..00916e8c6326f5f2a7813c26f38a9270d9d97573 100644
--- a/chrome/browser/ssl/ssl_error_info.cc
+++ b/chrome/browser/ssl/ssl_error_info.cc
@@ -59,10 +59,13 @@ SSLErrorInfo SSLErrorInfo::CreateError(ErrorType error_type,
     }
     case CERT_DATE_INVALID:
       if (cert->HasExpired()) {
+        // Make sure to round up to the smallest integer value not less than
+        // the expiration value (https://crbug.com/476758).
+        int expiration_value =
+            (base::Time::Now() - cert->valid_expiry()).InDays() + 1;
         details = l10n_util::GetStringFUTF16(
             IDS_CERT_ERROR_EXPIRED_DETAILS, UTF8ToUTF16(request_url.host()),
-            base::IntToString16(
-                (base::Time::Now() - cert->valid_expiry()).InDays()),
+            base::IntToString16(expiration_value),
             base::TimeFormatFriendlyDate(base::Time::Now()));
         short_description =
             l10n_util::GetStringUTF16(IDS_CERT_ERROR_EXPIRED_DESCRIPTION);