Support asynchronous patching operations in the component updater.

chrome/browser/component_updater/component_patcher_win.h

 // Copyright 2013 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_BROWSER_COMPONENT_UPDATER_COMPONENT_PATCHER_WIN_H_
 #define CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_PATCHER_WIN_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/component_updater/component_patcher.h"
 
 class ComponentPatcherWin : public ComponentPatcher {
  public:
   ComponentPatcherWin() {}
-  virtual ComponentUnpacker::Error Patch(PatchType patch_type,
+  virtual component_updater::Error Patch(PatchType patch_type,
                                          const base::FilePath& input_file,
                                          const base::FilePath& patch_file,
                                          const base::FilePath& output_file,
                                          int* error) OVERRIDE;
  private:
   DISALLOW_COPY_AND_ASSIGN(ComponentPatcherWin);
 };
 
 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_PATCHER_WIN_H_