[iOS] Add about_flags entry for leak detection

Bug: 986298
Change-Id: Iccb2f8722e09362f9c32ad496688876fe1141bf1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1821723Reviewed-by: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Commit-Queue: Ioana Pandele <ioanap@chromium.org>
Cr-Commit-Position: refs/heads/master@{#699715}

ios/chrome/browser/flags/about_flags.mm

@@ -554,6 +554,9 @@ const flags_ui::FeatureEntry kFeatureEntries[] = {
     {"ios-breadcrumbs", flag_descriptions::kLogBreadcrumbsName,
      flag_descriptions::kLogBreadcrumbsDescription, flags_ui::kOsIos,
      FEATURE_VALUE_TYPE(kLogBreadcrumbs)},
+    {"password-leak-detection", flag_descriptions::kPasswordLeakDetectionName,
+     flag_descriptions::kPasswordLeakDetectionDescription, flags_ui::kOsIos,
+     FEATURE_VALUE_TYPE(password_manager::features::kLeakDetection)},
 };
 
 // Add all switches from experimental flags to |command_line|.

ios/chrome/browser/flags/ios_chrome_flag_descriptions.cc

@@ -287,6 +287,10 @@ const char kOptionalArticleThumbnailDescription[] =
     "Make thumbnails of NTP articles optional due to European copyright "
     "directive(EUCD). Also change the layout of article cells";
 
+const char kPasswordLeakDetectionName[] = "Password Leak Detection";
+const char kPasswordLeakDetectionDescription[] =
+    "Enables the detection of leaked passwords.";
+
 const char kSearchIconToggleName[] = "Change the icon for the search button";
 const char kSearchIconToggleDescription[] =
     "Different icons for the search button.";

ios/chrome/browser/flags/ios_chrome_flag_descriptions.h

@@ -240,6 +240,11 @@ extern const char kOmniboxOnDeviceHeadSuggestionsDescription[];
 extern const char kOptionalArticleThumbnailName[];
 extern const char kOptionalArticleThumbnailDescription[];
 
+// Title and description for the flag to enable leak detection for entered
+// credentials.
+extern const char kPasswordLeakDetectionName[];
+extern const char kPasswordLeakDetectionDescription[];
+
 // Title and description for the flag to toggle the flag of the search button.
 extern const char kSearchIconToggleName[];
 extern const char kSearchIconToggleDescription[];