Don't send a SHChangeNotify for creating an app icon when creating a shortcut.

chrome/browser/web_applications/update_shortcut_worker_win.cc

Index: chrome/browser/web_applications/update_shortcut_worker_win.cc
diff --git a/chrome/browser/web_applications/update_shortcut_worker_win.cc b/chrome/browser/web_applications/update_shortcut_worker_win.cc
index a1f59858d752254153acf3c2854d2da643a3759e..39d6ec0008bf856f1362e70e6678eec41280d7bc 100644
--- a/chrome/browser/web_applications/update_shortcut_worker_win.cc
+++ b/chrome/browser/web_applications/update_shortcut_worker_win.cc
@@ -192,7 +192,7 @@ void UpdateShortcutWorker::UpdateShortcutsOnFileThread() {
 
   base::FilePath icon_file =
       web_app::internals::GetIconFilePath(web_app_path, shortcut_info_.title);
-  web_app::internals::CheckAndSaveIcon(icon_file, shortcut_info_.favicon);
+  web_app::internals::CheckAndSaveIcon(icon_file, shortcut_info_.favicon, true);
 
   // Update existing shortcuts' description, icon and app id.
   CheckExistingShortcuts();