Implement download link in chrome://indexeddb-internals/

content/browser/indexed_db/indexed_db_internals_ui.h

 // Copyright (c) 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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INTERNALS_UI_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INTERNALS_UI_H_
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/indexed_db_context.h"
 #include "content/public/browser/web_ui_controller.h"
+#include "net/base/net_errors.h"
 
 namespace base { class ListValue; }
 
 namespace content {
 
 class StoragePartition;
+class DownloadItem;
 
 // The implementation for the chrome://indexeddb-internals page.
 class IndexedDBInternalsUI : public WebUIController {
  public:
   explicit IndexedDBInternalsUI(WebUI* web_ui);
   virtual ~IndexedDBInternalsUI();
 
  private:
   typedef std::vector<scoped_refptr<IndexedDBContext> > ContextList;
   void GetAllOrigins(const base::ListValue* args);
   void GetAllOriginsOnWebkitThread(
       scoped_ptr<ContextList> contexts,
       scoped_ptr<std::vector<base::FilePath> > context_paths);
   void OnOriginsReady(scoped_ptr<std::vector<IndexedDBInfo> > origins,
                       const base::FilePath& path);
 
   static void AddContextFromStoragePartition(ContextList* contexts,
                                              std::vector<base::FilePath>* paths,
                                              StoragePartition* partition);
 
+  void DownloadOriginData(const base::ListValue* args);
+  void DownloadOriginDataOnWebkitThread(const base::FilePath& partition_path,
+                                        scoped_refptr<IndexedDBContext> context,
+                                        const GURL& origin_url);
+  void OnDownloadDataReady(const base::FilePath& partition_path,
+                           const GURL& origin_url,
+                           const base::FilePath temp_path,
+                           const base::FilePath zip_path);
+  void OnDownloadStarted(const base::FilePath& partition_path,
+                         const GURL& origin_url,
+                         const base::FilePath& temp_path,
+                         content::DownloadItem* item,
+                         net::Error error);
+
   DISALLOW_COPY_AND_ASSIGN(IndexedDBInternalsUI);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INTERNALS_UI_H_