Always do DelegateExecute handler COM registration and make set dual mode prop on shortcuts.

base/win/win_util.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 "base/win/win_util.h"
 
 #include <aclapi.h>
 #include <shobjidl.h>  // Must be before propkey.
 #include <propkey.h>
 #include <propvarutil.h>
@@ skipping 173 matching lines @@
   // format is CompanyName.ProductName[.SubProduct.ProductNumber].
   // See http://msdn.microsoft.com/en-us/library/dd378459%28VS.85%29.aspx
   DCHECK(lstrlen(app_id) < 128 && wcschr(app_id, L' ') == NULL);
 
   return SetStringValueForPropertyStore(property_store,
                                         PKEY_AppUserModel_ID,
                                         app_id);
 }
 
 bool SetDualModeForPropertyStore(IPropertyStore* property_store) {
-  DCHECK_GE(base::win::GetVersion(), base::win::VERSION_WIN8);
-
   return SetBooleanValueForPropertyStore(property_store,
                                          PKEY_AppUserModel_DualMode,
                                          true) &&
          SetUInt32ValueForPropertyStore(property_store,
                                         PKEY_AppUserModel_DualMode_UK,
                                         1U);
 }
 
 static const char16 kAutoRunKeyPath[] =
     L"Software\\Microsoft\\Windows\\CurrentVersion\\Run";
@@ skipping 42 matching lines @@
 
 #ifndef COPY_FILE_COPY_SYMLINK
 #error You must install the Windows 2008 or Vista Software Development Kit and \
 set it as your default include path to build this library. You can grab it by \
 searching for "download windows sdk 2008" in your favorite web search engine.  \
 Also make sure you register the SDK with Visual Studio, by selecting \
 "Integrate Windows SDK with Visual Studio 2005" from the Windows SDK \
 menu (see Start - All Programs - Microsoft Windows SDK - \
 Visual Studio Registration).
 #endif