Introduce dedicated enum value for icons from Web Manifests

chrome/browser/android/webapps/add_to_homescreen_data_fetcher.cc

Index: chrome/browser/android/webapps/add_to_homescreen_data_fetcher.cc
diff --git a/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.cc b/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.cc
index a67b5687190cb61817766e6f55b7865affe12644..e5f3bc8762e6a643138a6cdda0056b39e99880f3 100644
--- a/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.cc
+++ b/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.cc
@@ -264,7 +264,7 @@ void AddToHomescreenDataFetcher::FetchFavicon() {
   // TODO(dfalcantara): Try combining with the new BookmarksHandler once its
   //                    rewrite is further along.
   std::vector<int> icon_types{
-      favicon_base::FAVICON,
+      favicon_base::WEB_MANIFEST_ICON, favicon_base::FAVICON,
       favicon_base::TOUCH_PRECOMPOSED_ICON | favicon_base::TOUCH_ICON};
 
   favicon::FaviconService* favicon_service =