Split DownloadItem into an ABC, an Impl, and a Mock.

content/browser/download/save_package.cc

 // 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.
 
 #include "content/browser/download/save_package.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/i18n/file_util_icu.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
 #include "base/string_piece.h"
 #include "base/string_split.h"
 #include "base/sys_string_conversions.h"
 #include "base/threading/thread.h"
 #include "base/utf_string_conversions.h"
 #include "content/browser/browser_context.h"
 #include "content/browser/download/download_file_manager.h"
-#include "content/browser/download/download_item.h"
+#include "content/browser/download/download_item_impl.h"
 #include "content/browser/download/download_manager.h"
 #include "content/browser/download/save_file.h"
 #include "content/browser/download/save_file_manager.h"
 #include "content/browser/download/save_item.h"
 #include "content/browser/renderer_host/render_process_host.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
 #include "content/browser/resource_context.h"
 #include "content/browser/tab_contents/tab_contents.h"
@@ skipping 225 matching lines @@
   wait_state_ = START_PROCESS;
 
   // Initialize the request context and resource dispatcher.
   content::BrowserContext* browser_context = tab_contents()->browser_context();
   if (!browser_context) {
     NOTREACHED();
     return false;
   }
 
   // Create the download item, and add ourself as an observer.
-  download_ = new DownloadItem(download_manager_,
-                               saved_main_file_path_,
-                               page_url_,
-                               browser_context->IsOffTheRecord(),
-                               download_manager_->GetNextId());
+  download_ = new DownloadItemImpl(download_manager_,
+                                   saved_main_file_path_,
+                                   page_url_,
+                                   browser_context->IsOffTheRecord(),
+                                   download_manager_->GetNextId());
   download_->AddObserver(this);
 
   // Transfer ownership to the download manager.
   download_manager_->SavePageDownloadStarted(download_);
 
   // Check save type and process the save page job.
   if (save_type_ == SAVE_AS_COMPLETE_HTML) {
     // Get directory
     DCHECK(!saved_main_directory_path_.empty());
     GetAllSavableResourceLinksForCurrentPage();
@@ skipping 995 matching lines @@
     StopObservation();
 }
 
 void SavePackage::FinalizeDownloadEntry() {
   DCHECK(download_);
   DCHECK(download_manager_);
 
   download_manager_->SavePageDownloadFinished(download_);
   StopObservation();
 }