Force COM machinery to notice that the path to the DelegateExecute verb handler has changed.

chrome/installer/util/work_item_list.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_INSTALLER_UTIL_WORK_ITEM_LIST_H_
 #define CHROME_INSTALLER_UTIL_WORK_ITEM_LIST_H_
 
 #include <windows.h>
 
 #include <list>
 #include <string>
 #include <vector>
 
+#include "base/callback.h"

[robertshield, 2012/08/30 17:52:43]

is it possible to use base/callback_forward.h here and in the other #includes
that occur in header files in this CL?

[grt (UTC plus 2), 2012/08/30 18:21:50]

Yes!  All but callback_work_item.h.

 #include "base/memory/scoped_ptr.h"
 #include "chrome/installer/util/work_item.h"
 
 class FilePath;
 
 // A WorkItem subclass that recursively contains a list of WorkItems. Thus it
 // provides functionalities to carry out or roll back the sequence of actions
 // defined by the list of WorkItems it contains.
 // The WorkItems are executed in the same order as they are added to the list.
 class WorkItemList : public WorkItem {
  public:
   virtual ~WorkItemList();
 
   // Execute the WorkItems in the same order as they are added to the list.
   // It aborts as soon as one WorkItem fails.
   virtual bool Do();
 
   // Rollback the WorkItems in the reverse order as they are executed.
   virtual void Rollback();
 
   // Add a WorkItem to the list.
   // A WorkItem can only be added to the list before the list's DO() is called.
   // Once a WorkItem is added to the list. The list owns the WorkItem.
   virtual void AddWorkItem(WorkItem* work_item);
 
+  // Add a CallbackWorkItem that invokes a callback.
+  virtual WorkItem* AddCallbackWorkItem(
+      base::Callback<bool(const CallbackWorkItem&)> callback);
+
   // Add a CopyRegKeyWorkItem that recursively copies a given registry key.
   virtual WorkItem* AddCopyRegKeyWorkItem(HKEY predefined_root,
                                           const std::wstring& source_key_path,
                                           const std::wstring& dest_key_path,
                                           CopyOverWriteOption overwrite_option);
 
   // Add a CopyTreeWorkItem to the list of work items.
   // See the NOTE in the documentation for the CopyTreeWorkItem class for
   // special considerations regarding |temp_dir|.
   virtual WorkItem* AddCopyTreeWorkItem(
@@ skipping 109 matching lines @@
   // Execute the WorkItems in the same order as they are added to the list.
   // If a WorkItem fails, the function will return failure but all other
   // WorkItems will still be executed.
   virtual bool Do();
 
   // Just does a NOTREACHED.
   virtual void Rollback();
 };
 
 #endif  // CHROME_INSTALLER_UTIL_WORK_ITEM_LIST_H_