[Payments] Upload card UI now has a CVC prompt

chrome/browser/flag_descriptions.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_FLAG_DESCRIPTIONS_H_
 #define CHROME_BROWSER_FLAG_DESCRIPTIONS_H_
 
 // Includes needed for macros allowing conditional compilation of some strings.
 #include "build/build_config.h"
 #include "build/buildflag.h"
@@ skipping 2589 matching lines @@
 #endif  // defined(OS_ANDROID)
 
 // Name for the flag to enable display the last used date of a credit card in
 // autofill.
 extern const char kEnableAutofillCreditCardLastUsedDateDisplay[];
 
 // Description for the flag to enable display the last used date of a credit
 // 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.
 extern const char kGoogleBrandedContextMenuName[];
 
 // Description for the flag to enable Google branding in the context menu.
 extern const char kGoogleBrandedContextMenuDescription[];
 
 #endif  // !defined(OS_ANDROID) && defined(GOOGLE_CHROME_BUILD)
 
@@ skipping 532 matching lines @@
 
 // Description of the about: flag enabling emoji, handwriting and voice input on
 // opt-in IME menu.
 extern const char kEnableEhvInputDescription[];
 
 #endif  // #if defined(OS_CHROMEOS)
 
 }  // namespace flag_descriptions
 
 #endif  // CHROME_BROWSER_FLAG_DESCRIPTIONS_H_