Adds asynchronous unzip functions to ZipReader

chrome/browser/extensions/api/image_writer_private/operation_manager.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_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_OPERATION_MANAGER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_OPERATION_MANAGER_H_
 
 #include <map>
 #include <string>
 #include "base/bind.h"
@@ skipping 43 matching lines @@
   // Starts a WriteFromFile operation.
   void StartWriteFromFile(const ExtensionId& extension_id,
                           const std::string& storage_unit_id,
                           const Operation::StartWriteCallback& callback);
 
   // Cancels the extensions current operation if any.
   void CancelWrite(const ExtensionId& extension_id,
                    const Operation::CancelWriteCallback& callback);
 
   // Callback for progress events.
-  void OnProgress(const ExtensionId& extension_id,
+  virtual void OnProgress(const ExtensionId& extension_id,
                   image_writer_api::Stage stage,
                   int progress);
   // Callback for completion events.
-  void OnComplete(const ExtensionId& extension_id);
+  virtual void OnComplete(const ExtensionId& extension_id);
 
   // Callback for error events.
   // TODO (haven): Add error codes.
-  void OnError(const ExtensionId& extension_id,
+  virtual void OnError(const ExtensionId& extension_id,
                image_writer_api::Stage stage,
                int progress,
                const std::string& error_message);
 
   // ProfileKeyedAPI
   static ProfileKeyedAPIFactory<OperationManager>*
       GetFactoryInstance();
   static OperationManager* Get(Profile* profile);
 
   Profile* profile() { return profile_; }
@@ skipping 21 matching lines @@
 
   base::WeakPtrFactory<OperationManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OperationManager);
 };
 
 }  // namespace image_writer
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_OPERATION_MANAGER_H_