Modified cancel and interrupt processing to avoid race with history.

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/file_path.h"
 #include "base/file_util.h"
@@ skipping 625 matching lines @@
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(file_manager_,
                         &SaveFileManager::RemoveSavedFileFromFileMap,
                         save_ids));
 
   finished_ = true;
   wait_state_ = FAILED;
 
   // Inform the DownloadItem we have canceled whole save page job.
-  download_->Cancel(false);
+  download_->Cancel();
 }
 
 void SavePackage::CheckFinish() {
   if (in_process_count() || finished_)
     return;
 
   FilePath dir = (save_type_ == SAVE_AS_COMPLETE_HTML &&
                   saved_success_items_.size() > 1) ?
                   saved_main_directory_path_ : FilePath();
 
@@ skipping 663 matching lines @@
 bool SavePackage::IsSavableContents(const std::string& contents_mime_type) {
   // WebKit creates Document object when MIME type is application/xhtml+xml,
   // so we also support this MIME type.
   return contents_mime_type == "text/html" ||
          contents_mime_type == "text/xml" ||
          contents_mime_type == "application/xhtml+xml" ||
          contents_mime_type == "text/plain" ||
          contents_mime_type == "text/css" ||
          net::IsSupportedJavascriptMimeType(contents_mime_type.c_str());
 }