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

chrome/browser/web_applications/update_shortcut_worker_win.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/web_applications/update_shortcut_worker_win.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 174 matching lines @@
   // Ensure web_app_path exists. web_app_path could be missing for a legacy
   // shortcut created by Gears.
   if (!base::PathExists(web_app_path) &&
       !base::CreateDirectory(web_app_path)) {
     NOTREACHED();
     return;
   }
 
   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();
   if (!shortcut_files_.empty()) {
     // Generates app id from web app url and profile path.
     base::string16 app_id = ShellIntegration::GetAppModelIdForProfile(
         base::UTF8ToWide(
             web_app::GenerateApplicationNameFromURL(shortcut_info_.url)),
         profile_path_);
 
@@ skipping 29 matching lines @@
                  base::Unretained(this)));
   }
 }
 
 void UpdateShortcutWorker::DeleteMeOnUIThread() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   delete this;
 }
 
 }  // namespace web_app