set content length limit if half open range request fails

content/browser/download/mock_download_file.h

 // Copyright (c) 2012 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_DOWNLOAD_MOCK_DOWNLOAD_FILE_H_
 #define CONTENT_BROWSER_DOWNLOAD_MOCK_DOWNLOAD_FILE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 33 matching lines @@
                void(const base::FilePath& full_path,
                     const RenameCompletionCallback& callback));
   MOCK_METHOD5(RenameAndAnnotate,
                void(const base::FilePath& full_path,
                     const std::string& client_guid,
                     const GURL& source_url,
                     const GURL& referrer_url,
                     const RenameCompletionCallback& callback));
   MOCK_METHOD0(Detach, void());
   MOCK_METHOD0(Cancel, void());
+  MOCK_METHOD1(SetPotentialFileLength, void(int64_t length));
   MOCK_METHOD0(Finish, void());
   MOCK_CONST_METHOD0(FullPath, const base::FilePath&());
   MOCK_CONST_METHOD0(InProgress, bool());
   MOCK_METHOD0(WasPaused, void());
   MOCK_CONST_METHOD0(BytesSoFar, int64_t());
   MOCK_CONST_METHOD0(CurrentSpeed, int64_t());
   MOCK_METHOD1(GetHash, bool(std::string* hash));
   MOCK_METHOD0(SendUpdate, void());
   MOCK_CONST_METHOD0(Id, int());
   MOCK_METHOD0(GetDownloadManager, DownloadManager*());
   MOCK_CONST_METHOD0(DebugString, std::string());
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_MOCK_DOWNLOAD_FILE_H_