[ios] Add Magic Stack Feature Flag

Bug: 1432252
Change-Id: Icb9799399da689adefcb76cb273b9a03cb1f4bae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4415680
Reviewed-by: Scott Yoder <[email protected]>
Commit-Queue: Chris Lu <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1128927}
diff --git a/ios/chrome/browser/flags/about_flags.mm b/ios/chrome/browser/flags/about_flags.mm
index 00f4365b..c794108 100644
--- a/ios/chrome/browser/flags/about_flags.mm
+++ b/ios/chrome/browser/flags/about_flags.mm
@@ -1114,6 +1114,9 @@
      flag_descriptions::kEnableFeedCardMenuSignInPromoName,
      flag_descriptions::kEnableFeedCardMenuSignInPromoDescription,
      flags_ui::kOsIos, FEATURE_VALUE_TYPE(kEnableFeedCardMenuSignInPromo)},
+    {"content-suggestions-magic-stack", flag_descriptions::kMagicStackName,
+     flag_descriptions::kMagicStackDescription, flags_ui::kOsIos,
+     FEATURE_VALUE_TYPE(kMagicStack)},
     {"content-suggestions-ui-module-refresh",
      flag_descriptions::kContentSuggestionsUIModuleRefreshName,
      flag_descriptions::kContentSuggestionsUIModuleRefreshDescription,