Remove custom Task implementations from VisitedLinkMaster and web_app.

chrome/browser/ui/views/create_application_shortcut_view.cc

 // Copyright (c) 2011 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/ui/views/create_application_shortcut_view.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 358 matching lines @@
 
 #if defined(OS_WIN)
   shortcut_info_.create_in_quick_launch_bar = quick_launch_check_box_ == NULL ?
       NULL : quick_launch_check_box_->checked();
 #elif defined(OS_POSIX)
   // Create shortcut in Mac dock or as Linux (gnome/kde) application launcher
   // are not implemented yet.
   shortcut_info_.create_in_quick_launch_bar = false;
 #endif
 
-  web_app::CreateShortcut(profile_->GetPath(),
-                          shortcut_info_,
-                          NULL);
+  web_app::CreateShortcut(profile_->GetPath(), shortcut_info_);
   return true;
 }
 
 
 views::View* CreateApplicationShortcutView::GetContentsView() {
   return this;
 }
 
 views::Checkbox* CreateApplicationShortcutView::AddCheckbox(
     const string16& text, bool checked) {
@@ skipping 133 matching lines @@
 // Called by tracker_ when the app's icon is loaded.
 void CreateChromeApplicationShortcutView::OnImageLoaded(
     SkBitmap* image, const ExtensionResource& resource, int index) {
   if (!image || image->isNull())
     image = ExtensionIconSource::LoadImageByResourceId(IDR_APP_DEFAULT_ICON);
 
   shortcut_info_.favicon = *image;
   CHECK(app_info_);
   static_cast<AppInfoView*>(app_info_)->UpdateIcon(shortcut_info_.favicon);
 }