[iOS][Biometric-Auth] Add feature flag

Bug: 1112785
Change-Id: I99a228547d7907c2e9825d72da70a9d96b1f2206
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2335195Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Auto-Submit: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#794953}

chrome/browser/flag-metadata.json

@@ -1202,6 +1202,11 @@
     "owners": [ "fhorschig@chromium.org" ],
     "expiry_milestone": 87
   },
+  {
+    "name": "enable-autofill-password-reauth-ios",
+    "owners": [ "javierrobles", "bling-flags" ],
+    "expiry_milestone": 90
+  },
   {
     "name": "enable-autofill-refresh-style",
     "owners": [ "tmartino@chromium.org" ],

ios/chrome/browser/flags/about_flags.mm

@@ -684,6 +684,10 @@ const flags_ui::FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kIOSLegacyTLSInterstitialsName,
      flag_descriptions::kIOSLegacyTLSInterstitialsDescription, flags_ui::kOsIos,
      FEATURE_VALUE_TYPE(web::features::kIOSLegacyTLSInterstitial)},
+    {"enable-autofill-password-reauth-ios",
+     flag_descriptions::kEnableAutofillPasswordReauthIOSName,
+     flag_descriptions::kEnableAutofillPasswordReauthIOSDescription,
+     flags_ui::kOsIos, FEATURE_VALUE_TYPE(kEnableAutofillPasswordReauthIOS)},
 };
 
 bool SkipConditionalFeatureEntry(const flags_ui::FeatureEntry& entry) {

ios/chrome/browser/flags/ios_chrome_flag_descriptions.cc

@@ -229,6 +229,12 @@ const char kEnableAutofillCacheServerCardInfoDescription[] =
     "If enabled, when a server card is unmasked, its info will be cached until "
     "page navigation to simplify consecutive fills on the same page.";
 
+const char kEnableAutofillPasswordReauthIOSName[] =
+    "Enable Autofill reauth request for passwords";
+const char kEnableAutofillPasswordReauthIOSDescription[] =
+    "If enabled, when a credential will be filled, the browser will require "
+    "the user to authenticate with the device first.";
+
 const char kEnableClipboardProviderImageSuggestionsName[] =
     "Enable copied image provider";
 const char kEnableClipboardProviderImageSuggestionsDescription[] =

ios/chrome/browser/flags/ios_chrome_flag_descriptions.h

@@ -192,6 +192,10 @@ extern const char kEmbedderBlockRestoreUrlDescription[];
 extern const char kEnableAutofillCacheServerCardInfoName[];
 extern const char kEnableAutofillCacheServerCardInfoDescription[];
 
+// Title and description for the flag to enable reauth for filling passwords.
+extern const char kEnableAutofillPasswordReauthIOSName[];
+extern const char kEnableAutofillPasswordReauthIOSDescription[];
+
 // Title and description for the flag to enable the clipboard provider to
 // suggest searchihng for copied images.
 extern const char kEnableClipboardProviderImageSuggestionsName[];

ios/chrome/browser/ui/ui_feature_flags.cc

@@ -62,3 +62,6 @@ const base::Feature kSharedHighlightingIOS{"SharedHighlightingIOS",
 
 const base::Feature kEnableFullPageScreenshot{
     "EnableFullPageScreenshot", base::FEATURE_DISABLED_BY_DEFAULT};
+
+const base::Feature kEnableAutofillPasswordReauthIOS{
+    "EnableAutofillPasswordReauthIOS", base::FEATURE_DISABLED_BY_DEFAULT};

ios/chrome/browser/ui/ui_feature_flags.h

@@ -69,4 +69,7 @@ extern const base::Feature kSharedHighlightingIOS;
 // Feature flag that enables taking fullpage screenshots of a webpage.
 extern const base::Feature kEnableFullPageScreenshot;
 
+// Feature flag that enables reauth for filling passwords;
+extern const base::Feature kEnableAutofillPasswordReauthIOS;
+
 #endif  // IOS_CHROME_BROWSER_UI_UI_FEATURE_FLAGS_H_