Only do DelegateExecute verb handler registration for Google Chrome.

chrome/installer/util/browser_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 declares a class that contains various method related to branding.
 
 #ifndef CHROME_INSTALLER_UTIL_BROWSER_DISTRIBUTION_H_
 #define CHROME_INSTALLER_UTIL_BROWSER_DISTRIBUTION_H_
 #pragma once
 
@@ skipping 98 matching lines @@
   virtual std::wstring GetVersionKey();
 
   virtual bool CanSetAsDefault();
 
   virtual bool CanCreateDesktopShortcuts();
 
   virtual int GetIconIndex();
 
   virtual bool GetChromeChannel(std::wstring* channel);
 
+  // Returns true if the distribution includes a DelegateExecute verb handler,
+  // and provides the COM registration data if so:
+  // |handler_class_uuid| is the CommandExecuteImpl class UUID.
+  // |type_lib_uuid| and |type_lib_version| identify its type library.
+  // |interface_uuid| is the ICommandExecuteImpl interface UUID.
+  virtual bool GetDelegateExecuteHandlerData(string16* handler_class_uuid,
+                                             string16* type_lib_uuid,
+                                             string16* type_lib_version,
+                                             string16* interface_uuid);
+
   virtual void UpdateInstallStatus(bool system_install,
       installer::ArchiveType archive_type,
       installer::InstallStatus install_status);
 
   // Gets the experiment details for a given language-brand combo. If |flavor|
   // is -1, then a flavor will be selected at random. |experiment| is the struct
   // you want to write the experiment information to. Returns false if no
   // experiment details could be gathered.
   virtual bool GetExperimentDetails(UserExperiment* experiment, int flavor);
 
@@ skipping 22 matching lines @@
 
   const Type type_;
 
  private:
   BrowserDistribution();
 
   DISALLOW_COPY_AND_ASSIGN(BrowserDistribution);
 };
 
 #endif  // CHROME_INSTALLER_UTIL_BROWSER_DISTRIBUTION_H_