Add Credit card scanner flag

- Add a flag for the 'Use Camera' button in the 'Add Credit Card' view.
- The button directs the user to a credit card scanner that uses the camera to scan a credit card number.

Bug:989432

Change-Id: I431e8c915cdf3a745f470a2ab1ecc4552e761311
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1787550Reviewed-by: Eric Noyau <noyau@chromium.org>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Tanisha Mandre <tanishamandre@google.com>
Cr-Commit-Position: refs/heads/master@{#693831}

ios/chrome/browser/flags/about_flags.mm

@@ -570,6 +570,9 @@ const flags_ui::FeatureEntry kFeatureEntries[] = {
      flags_ui::kOsIos,
      FEATURE_VALUE_TYPE(
          autofill::features::kAutofillUpstreamEditableExpirationDate)},
+    {"credit-card-scanner", flag_descriptions::kCreditCardScannerName,
+     flag_descriptions::kCreditCardScannerDescription, flags_ui::kOsIos,
+     FEATURE_VALUE_TYPE(kCreditCardScanner)},
 };
 
 // Add all switches from experimental flags to |command_line|.

ios/chrome/browser/flags/ios_chrome_flag_descriptions.cc

@@ -134,6 +134,11 @@ const char kCopiedContentBehaviorDescription[] =
     "When enabled, places that handled copied urls (omnibox long-press, toolbar"
     "menus) will differentiate between copied urls, text, and images.";
 
+const char kCreditCardScannerName[] = "Enable the 'Use Camera' button";
+const char kCreditCardScannerDescription[] =
+    "Allow a user to scan a credit card using the credit card camera scanner."
+    "The 'Use Camera' button is located in the 'Add Payment Method' view";
+
 #if defined(DCHECK_IS_CONFIGURABLE)
 const char kDcheckIsFatalName[] = "DCHECKs are fatal";
 const char kDcheckIsFatalDescription[] =

ios/chrome/browser/flags/ios_chrome_flag_descriptions.h

@@ -102,6 +102,11 @@ extern const char kCollectionsCardPresentationStyleDescription[];
 extern const char kCopiedContentBehaviorName[];
 extern const char kCopiedContentBehaviorDescription[];
 
+// Title and description for the flag to scan a new credit card using the
+// camera.
+extern const char kCreditCardScannerName[];
+extern const char kCreditCardScannerDescription[];
+
 #if defined(DCHECK_IS_CONFIGURABLE)
 // Title and description for the flag to enable configurable DCHECKs.
 extern const char kDcheckIsFatalName[];

ios/chrome/browser/ui/settings/autofill/autofill_add_credit_card_view_controller.mm

@@ -8,6 +8,7 @@
 #include "base/mac/foundation_util.h"
 #import "ios/chrome/browser/ui/autofill/cells/autofill_edit_item.h"
 #import "ios/chrome/browser/ui/settings/autofill/autofill_add_credit_card_view_controller_delegate.h"
+#import "ios/chrome/browser/ui/settings/autofill/features.h"
 #import "ios/chrome/browser/ui/table_view/cells/table_view_text_edit_item.h"
 #import "ios/chrome/browser/ui/table_view/cells/table_view_text_item.h"
 #import "ios/chrome/browser/ui/table_view/chrome_table_view_controller.h"
@@ -177,10 +178,12 @@ typedef NS_ENUM(NSInteger, ItemType) {
   cameraButtonItem.text = l10n_util::GetNSString(
       IDS_IOS_AUTOFILL_ADD_CREDIT_CARD_OPEN_CAMERA_BUTTON_LABEL);
   cameraButtonItem.textAlignment = NSTextAlignmentCenter;
-  if (@available(iOS 13, *)) {
-    [model addSectionWithIdentifier:SectionIdentifierCameraButton];
-    [model addItem:cameraButtonItem
-        toSectionWithIdentifier:SectionIdentifierCameraButton];
+  if (base::FeatureList::IsEnabled(kCreditCardScanner)) {
+    if (@available(iOS 13, *)) {
+      [model addSectionWithIdentifier:SectionIdentifierCameraButton];
+      [model addItem:cameraButtonItem
+          toSectionWithIdentifier:SectionIdentifierCameraButton];
+    }
   }
 }
 

ios/chrome/browser/ui/settings/autofill/features.h

@@ -12,4 +12,7 @@
 // Add new credit card feature.
 extern const base::Feature kSettingsAddPaymentMethod;
 
+// Scan a credit card using the camera scanner feature.
+extern const base::Feature kCreditCardScanner;
+
 #endif  // IOS_CHROME_BROWSER_UI_SETTINGS_AUTOFILL_FEATURES_H_

ios/chrome/browser/ui/settings/autofill/features.mm

@@ -10,3 +10,6 @@
 
 const base::Feature kSettingsAddPaymentMethod{
     "SettingsAddPaymentMethod", base::FEATURE_DISABLED_BY_DEFAULT};
+
+const base::Feature kCreditCardScanner{"CreditCardScanner",
+                                       base::FEATURE_DISABLED_BY_DEFAULT};