Revamp the Incognito NTP on Desktop

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 7e3b7ad9ae4050ef6e0766ecc19dc4ed75333d8d..65cef2a5446dbbf0d2ca644b844540fb4dd14ac1 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2070,6 +2070,10 @@ const FeatureEntry kFeatureEntries[] = {
     {"enable-md-history", flag_descriptions::kEnableMaterialDesignHistoryName,
      flag_descriptions::kEnableMaterialDesignHistoryDescription, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kMaterialDesignHistory)},
+    {"enable-md-incognito-ntp",
+     flag_descriptions::kMaterialDesignIncognitoNTPName,
+     flag_descriptions::kMaterialDesignIncognitoNTPDescription, kOsDesktop,
+     FEATURE_VALUE_TYPE(features::kMaterialDesignIncognitoNTP)},
     {"enable-md-settings", flag_descriptions::kEnableMaterialDesignSettingsName,
      flag_descriptions::kEnableMaterialDesignSettingsDescription, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kMaterialDesignSettings)},