Suggest upgrading to SP3 or later for invalid certificate errors.

chrome/browser/ssl/ssl_blocking_page.cc

Index: chrome/browser/ssl/ssl_blocking_page.cc
diff --git a/chrome/browser/ssl/ssl_blocking_page.cc b/chrome/browser/ssl/ssl_blocking_page.cc
index d0d95b8f5e744a3b3f0981549be09553bfe39b42..596a3193b8b2b0b112e0bb71bf14e5c2f26348b3 100644
--- a/chrome/browser/ssl/ssl_blocking_page.cc
+++ b/chrome/browser/ssl/ssl_blocking_page.cc
@@ -542,7 +542,6 @@ std::string SSLBlockingPage::GetHTMLContentsV2() {
   load_time_data.SetString(
      "closeDetails",
      l10n_util::GetStringUTF16(IDS_SSL_V2_CLOSE_DETAILS_BUTTON));
-
   if (overridable_ && !strict_enforcement_) {  // Overridable.
     SSLErrorInfo error_info =
         SSLErrorInfo::CreateError(
@@ -559,17 +558,24 @@ std::string SSLBlockingPage::GetHTMLContentsV2() {
         l10n_util::GetStringFUTF16(IDS_SSL_OVERRIDABLE_PROCEED_PARAGRAPH, url));
   } else {  // Non-overridable.
     load_time_data.SetBoolean("overridable", false);
-    load_time_data.SetString(
-        "explanationParagraph",
-        l10n_util::GetStringFUTF16(IDS_SSL_NONOVERRIDABLE_MORE, url));
+    SSLErrorInfo::ErrorType type = SSLErrorInfo::CERT_INVALID;
+    //    SSLErrorInfo::NetErrorToErrorType(cert_error_);
+    if (type == SSLErrorInfo::CERT_INVALID && WindowsVersionSP3Lower()) {
+      load_time_data.SetString(
+          "explanationParagraph",
+          l10n_util::GetStringFUTF16(
+              IDS_SSL_NONOVERRIDABLE_MORE_INVALID_SP3, url));
+    } else {
+      load_time_data.SetString("explanationParagraph",
+                               l10n_util::GetStringFUTF16(
+                                   IDS_SSL_NONOVERRIDABLE_MORE, url));
+    }
     load_time_data.SetString(
         "primaryButtonText",
         l10n_util::GetStringUTF16(IDS_SSL_NONOVERRIDABLE_RELOAD_BUTTON));
     // Customize the help link depending on the specific error type.
     // Only mark as HSTS if none of the more specific error types apply, and use
     // INVALID as a fallback if no other string is appropriate.
-    SSLErrorInfo::ErrorType type =
-        SSLErrorInfo::NetErrorToErrorType(cert_error_);
     load_time_data.SetInteger("errorType", type);
     int help_string = IDS_SSL_NONOVERRIDABLE_INVALID;
     switch (type) {
@@ -760,3 +766,14 @@ void SSLBlockingPage::Observe(
   }
 #endif
 }
+
+bool SSLBlockingPage::WindowsVersionSP3Lower() {
+#if defined(OS_WIN)
+  const base::win::OSInfo* os_info = base::win::OSInfo::GetInstance();
+  base::win::OSInfo::ServicePack service_pack = os_info->service_pack();
+  if (os_info->version() == base::win::VERSION_XP && service_pack.major < 3) {
+    return true;
+  }
+#endif
+  return false;
+}