[iOS] Add about flag entry for notes for passwords

Bug: 1414897
Change-Id: I05cb991db77562f3c9304069379510de16946c72
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4270631
Commit-Queue: Rafał Godlewski <rgod@google.com>
Reviewed-by: Mohamed Amir Yosef <mamir@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1107378}

chrome/browser/flag-metadata.json

@@ -5613,7 +5613,7 @@
   },
   {
     "name": "password-notes",
-    "owners": ["mamir", "derinel@google.com"],
+    "owners": ["mamir", "derinel@google.com", "rgod@google.com"],
     "expiry_milestone": 114
   },
   {

ios/chrome/browser/flags/about_flags.mm

@@ -1355,6 +1355,9 @@
      flag_descriptions::kIOSCustomBrowserEditMenuName,
      flag_descriptions::kIOSCustomBrowserEditMenuDescription, flags_ui::kOsIos,
      FEATURE_VALUE_TYPE(kIOSCustomBrowserEditMenu)},
+    {"password-notes", flag_descriptions::kPasswordNotesWithBackupName,
+     flag_descriptions::kPasswordNotesWithBackupDescription, flags_ui::kOsIos,
+     FEATURE_VALUE_TYPE(syncer::kPasswordNotesWithBackup)},
 };
 
 bool SkipConditionalFeatureEntry(const flags_ui::FeatureEntry& entry) {

ios/chrome/browser/flags/ios_chrome_flag_descriptions.cc

@@ -716,6 +716,10 @@ const char kOptimizationTargetPredictionDescription[] =
 const char kOptimizationTargetPredictionName[] =
     "Enables usage of optimization guide TFLite models.";
 
+const char kPasswordNotesWithBackupName[] = "Password notes in settings";
+const char kPasswordNotesWithBackupDescription[] =
+    "Enables a note section for each password in the settings page.";
+
 const char kPasswordReuseDetectionName[] =
     "PhishGuard password reuse detection";
 const char kPasswordReuseDetectionDescription[] =

ios/chrome/browser/flags/ios_chrome_flag_descriptions.h

@@ -632,6 +632,11 @@ extern const char kOneTapForMapsDescription[];
 extern const char kOptimizationTargetPredictionDescription[];
 extern const char kOptimizationTargetPredictionName[];
 
+// Title and description for the flag to enable adding notes to password in
+// settings.
+extern const char kPasswordNotesWithBackupName[];
+extern const char kPasswordNotesWithBackupDescription[];
+
 // Title and description for the flag to enable PhishGuard password reuse
 // detection.
 extern const char kPasswordReuseDetectionName[];