Cleanup dual_mode handling in ShellIntegrationWin after Metro removal.

chrome/browser/ui/startup/startup_browser_creator_impl.cc

 // Copyright (c) 2012 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/startup/startup_browser_creator_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 364 matching lines @@
           switches::kStartFullscreen)) {
     // It's possible for there to be no browser window, e.g. if someone
     // specified a non-sensical combination of options
     // ("--kiosk --no_startup_window"); do nothing in that case.
     Browser* browser = BrowserList::GetInstance(desktop_type)->GetLastActive();
     if (browser)
       chrome::ToggleFullscreenMode(browser);
   }
 
 #if defined(OS_WIN)
+  // TODO(gab): This could now run only during Active Setup (i.e. on explicit
+  // Active Setup versioning and on OS upgrades) instead of every startup.
+  // http://crbug.com/577697
   if (process_startup)
     ShellIntegration::MigrateChromiumShortcuts();
 #endif  // defined(OS_WIN)
 
   return true;
 }
 
 bool StartupBrowserCreatorImpl::IsAppLaunch(std::string* app_url,
                                             std::string* app_id) {
   if (command_line_.HasSwitch(switches::kApp)) {
@@ skipping 601 matching lines @@
 #if defined(OS_WIN)
   TriggeredProfileResetter* triggered_profile_resetter =
       TriggeredProfileResetterFactory::GetForBrowserContext(profile_);
   // TriggeredProfileResetter instance will be nullptr for incognito profiles.
   if (triggered_profile_resetter) {
     has_reset_trigger = triggered_profile_resetter->HasResetTrigger();
   }
 #endif  // defined(OS_WIN)
   return has_reset_trigger;
 }