Make GetCommandExecuteImplClsid return the CLSID as a string directly.

chrome/installer/util/shell_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.
 //
 // This file defines functions that integrate Chrome in Windows shell. These
 // functions can be used by Chrome as well as Chrome installer. All of the
 // work is done by the local functions defined in anonymous namespace in
 // this class.
 
 #include "chrome/installer/util/shell_util.h"
@@ skipping 318 matching lines @@
         dist, InstallUtil::IsPerUserInstall(chrome_exe));
 
     // TODO(grt): http://crbug.com/75152 Write a reference to a localized
     // resource for name, description, and company.
     app_info.application_name = dist->GetDisplayName();
     app_info.application_icon_path = chrome_exe;
     app_info.application_icon_index = chrome_icon_index;
     app_info.application_description = dist->GetAppDescription();
     app_info.publisher_name = dist->GetPublisherName();
 
-    dist->GetCommandExecuteImplClsid(&app_info.delegate_clsid);
+    app_info.delegate_clsid = dist->GetCommandExecuteImplClsid();
 
     GetProgIdEntries(app_info, entries);
 
     if (!app_info.delegate_clsid.empty()) {
       ScopedVector<RegistryEntry> delegate_execute_entries =
           GetChromeDelegateExecuteEntries(chrome_exe, app_info);
       if (!IsChromeMetroSupported()) {
         // Remove the keys (not only their values) so that Windows will continue
         // to launch Chrome without a pesky association error.
         for (RegistryEntry* entry : delegate_execute_entries)
@@ skipping 2215 matching lines @@
   base::string16 key_path(ShellUtil::kRegClasses);
   key_path.push_back(base::FilePath::kSeparators[0]);
   key_path.append(prog_id);
   return InstallUtil::DeleteRegistryKey(
       HKEY_CURRENT_USER, key_path, WorkItem::kWow64Default);
 
   // TODO(mgiuca): Remove the extension association entries. This requires that
   // the extensions associated with a particular prog_id are stored in that
   // prog_id's key.
 }