[AF] Controls upstreaming credit cards from chrome://flags

Adds an entry to about flags page in iOS in order to control the feature.

Bug: 841758
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: Id61d8f4a63f0c6a89ec4c643640e1870d58c2ae7
Reviewed-on: https://chromium-review.googlesource.com/1055904
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: Peter Lee <pkl@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558026}

ios/chrome/browser/about_flags.mm

@@ -20,6 +20,7 @@
 #include "base/strings/stringprintf.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/sys_info.h"
+#include "components/autofill/core/browser/autofill_experiments.h"
 #include "components/autofill/core/common/autofill_features.h"
 #include "components/autofill/ios/browser/autofill_switches.h"
 #include "components/dom_distiller/core/dom_distiller_switches.h"
@@ -216,6 +217,10 @@ const flags_ui::FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kWKHTTPSystemCookieStoreName,
      flag_descriptions::kWKHTTPSystemCookieStoreName, flags_ui::kOsIos,
      FEATURE_VALUE_TYPE(web::features::kWKHTTPSystemCookieStore)},
+    {"enable-autofill-credit-card-upload",
+     flag_descriptions::kAutofillCreditCardUploadName,
+     flag_descriptions::kAutofillCreditCardUploadDescription, flags_ui::kOsIos,
+     FEATURE_VALUE_TYPE(autofill::kAutofillUpstream)},
     {"enable-autofill-credit-card-upload-google-pay-branding",
      flag_descriptions::kAutofillUpstreamUseGooglePayBrandingOnMobileName,
      flag_descriptions::

ios/chrome/browser/ios_chrome_flag_descriptions.cc

@@ -11,11 +11,17 @@
 
 namespace flag_descriptions {
 
+const char kAutofillCreditCardUploadName[] =
+    "Offers uploading Autofilled credit cards";
+const char kAutofillCreditCardUploadDescription[] =
+    "Offers uploading Autofilled credit cards to Google Payments after form "
+    "submission.";
+
 const char kAutofillUpstreamUseGooglePayBrandingOnMobileName[] =
     "Enable Google Pay branding when offering credit card upload";
 const char kAutofillUpstreamUseGooglePayBrandingOnMobileDescription[] =
-    "If enabled, shows the Google Pay logo and a shorter header message when "
-    "credit card upload to Google Payments is offered.";
+    "When enabled, shows the Google Pay logo and a shorter header message when "
+    "offering credit card upload to Google Payments.";
 
 const char kAutofillIOSDelayBetweenFieldsName[] = "Autofill delay";
 const char kAutofillIOSDelayBetweenFieldsDescription[] =

ios/chrome/browser/ios_chrome_flag_descriptions.h

@@ -7,6 +7,10 @@
 
 namespace flag_descriptions {
 
+// Title and description for the flag to control upstreaming credit cards.
+extern const char kAutofillCreditCardUploadName[];
+extern const char kAutofillCreditCardUploadDescription[];
+
 // Title and description for the flag to control GPay branding in credit card
 // upstream infobar.
 extern const char kAutofillUpstreamUseGooglePayBrandingOnMobileName[];