Make GetCommandExecuteImplClsid return the CLSID as a string directly.

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_
 
@@ skipping 25 matching lines @@
   std::string GetSafeBrowsingName() override;
 
   base::string16 GetUninstallRegPath() override;
 
   base::string16 GetIconFilename() override;
 
   DefaultBrowserControlPolicy GetDefaultBrowserControlPolicy() override;
 
   bool CanCreateDesktopShortcuts() override;
 
-  bool GetCommandExecuteImplClsid(base::string16* handler_class_uuid) override;
+  base::string16 GetCommandExecuteImplClsid() override;
 
   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_