[Payments] Upload card UI now has a CVC prompt

chrome/browser/flag_descriptions.h

Index: chrome/browser/flag_descriptions.h
diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index 78782b247aaad18eb5e803823456fb62e79e3fca..d2c22a90ff7960ad4e7afc970d861eee5902886e 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -2607,6 +2607,20 @@ extern const char kEnableAutofillCreditCardLastUsedDateDisplay[];
 // card in autofill.
 extern const char kEnableAutofillCreditCardLastUsedDateDisplayDescription[];
 
+#if defined(OS_CHROMEOS) || defined(OS_LINUX) || defined(OS_MACOSX) || \
+    defined(OS_WIN)
+
+// Name for the flag to enable requesting CVC in the credit card upload "offer
+// to save" bubble if it was not already detected in the submitted form.
+extern const char kAutofillUpstreamRequestCvcIfMissing[];
+
+// Description for the flag to enable requesting CVC in the credit card upload
+// offer to save bubble if it was not detected during the checkout flow.
+extern const char kAutofillUpstreamRequestCvcIfMissingDescription[];
+
+#endif  // defined(OS_CHROMEOS) || defined(OS_LINUX) || defined(OS_MACOSX) ||
+        // defined(OS_WIN)
+
 #if !defined(OS_ANDROID) && defined(GOOGLE_CHROME_BUILD)
 
 // Name for the flag to enable Google branding in the context menu.