Only do DelegateExecute verb handler registration for Google Chrome.

chrome/installer/util/chrome_frame_distribution.h

 // 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.
 //
 // This file extends the browser distribution with a specific implementation
 // for Chrome Frame.
 
 #ifndef CHROME_INSTALLER_UTIL_CHROME_FRAME_DISTRIBUTION_H_
 #define CHROME_INSTALLER_UTIL_CHROME_FRAME_DISTRIBUTION_H_
 #pragma once
@@ skipping 37 matching lines @@
   virtual std::wstring GetUninstallLinkName() OVERRIDE;
 
   virtual std::wstring GetUninstallRegPath() OVERRIDE;
 
   virtual std::wstring GetVersionKey() OVERRIDE;
 
   virtual bool CanSetAsDefault() OVERRIDE;
 
   virtual bool CanCreateDesktopShortcuts() OVERRIDE;
 
+  virtual bool GetDelegateExecuteHandlerData(string16* handler_class_uuid,
+                                           string16* type_lib_uuid,
+                                           string16* type_lib_version,
+                                           string16* interface_uuid) OVERRIDE;
+
   virtual void UpdateInstallStatus(bool system_install,
       installer::ArchiveType archive_type,
       installer::InstallStatus install_status) OVERRIDE;
 
  protected:
   friend class BrowserDistribution;
 
   // Disallow construction from non-friends.
   ChromeFrameDistribution();
 };
 
 #endif  // CHROME_INSTALLER_UTIL_CHROME_FRAME_DISTRIBUTION_H_