PLATFORM_FILE_EXCLUSIVE_READ  188 base/platform_file_posix.cc       if (flags & PLATFORM_FILE_EXCLUSIVE_READ ||
PLATFORM_FILE_EXCLUSIVE_READ   68 base/platform_file_win.cc   DWORD sharing = (flags & PLATFORM_FILE_EXCLUSIVE_READ) ? 0 : FILE_SHARE_READ;
PLATFORM_FILE_EXCLUSIVE_READ 1350 webkit/browser/fileapi/obfuscated_file_util.cc         base::PLATFORM_FILE_HIDDEN | base::PLATFORM_FILE_EXCLUSIVE_READ |