[WebAPKs]: Reduce the parameters of ShortcutHelper::AddToLauncherWithSkBitmap()

chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h

Index: chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h
diff --git a/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h b/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h
index ee209abec54703ea8f3f3f5e3ed94c60dc216ddf..963bbbee3a83b02daa01bfa8375e397e9e098bdf 100644
--- a/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h
+++ b/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h
@@ -82,10 +82,6 @@ class AddToHomescreenDataFetcher
                              bool check_webapk_compatible,
                              Observer* observer);
 
-  // Returns a callback which fetches the splash screen image to be stored for
-  // the webapp with the specified |id|.
-  base::Closure FetchSplashScreenImageCallback(const std::string& id);
-
   // IPC message received when the initialization is finished.
   void OnDidGetWebApplicationInfo(const WebApplicationInfo& web_app_info);
 
@@ -136,7 +132,6 @@ class AddToHomescreenDataFetcher
   SkBitmap badge_icon_;
   SkBitmap primary_icon_;
   ShortcutInfo shortcut_info_;
-  GURL splash_screen_url_;
 
   base::CancelableTaskTracker favicon_task_tracker_;
   base::Timer data_timeout_timer_;