Remove .osx file extension as a type of Mac executable

chrome/common/safe_browsing/download_protection_util.cc

 // 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.
 
 #include "chrome/common/safe_browsing/download_protection_util.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 18 matching lines @@
     // This function will return ZIPPED_EXECUTABLE for ZIP files as a
     // placeholder. The correct DownloadType will be determined based on the
     // result of analyzing the ZIP file.
     return ClientDownloadRequest::ZIPPED_EXECUTABLE;
   else if (file.MatchesExtension(FILE_PATH_LITERAL(".dmg")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".img")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".iso")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".pkg")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".mpkg")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".smi")) ||
-           file.MatchesExtension(FILE_PATH_LITERAL(".osx")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".app")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".cdr")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".dmgpart")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".dvdr")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".dart")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".dc42")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".diskcopy42")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".imgpart")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".ndif")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".udif")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".toast")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".sparsebundle")) ||
            file.MatchesExtension(FILE_PATH_LITERAL(".sparseimage")))
     return ClientDownloadRequest::MAC_EXECUTABLE;
   else if (FileTypePolicies::GetInstance()->IsArchiveFile(file))
     return ClientDownloadRequest::ARCHIVE;
   return ClientDownloadRequest::WIN_EXECUTABLE;
 }
 
 }  // namespace download_protection_util
 }  // namespace safe_browsing