Eliminate resource leaks from zip::ZipFiles and

third_party/zlib/google/zip.h

Index: third_party/zlib/google/zip.h
diff --git a/third_party/zlib/google/zip.h b/third_party/zlib/google/zip.h
index 0232401c862d4489cc63ef7917991fe496fb6a69..216b09e27f7b6d501a25a4a5736bf6a0defbd185 100644
--- a/third_party/zlib/google/zip.h
+++ b/third_party/zlib/google/zip.h
@@ -30,9 +30,10 @@ bool Zip(const base::FilePath& src_dir, const base::FilePath& dest_file,
 
 #if defined(OS_POSIX)
 // Zips files listed in |src_relative_paths| to destination specified by file
-// descriptor |dest_fd|. The paths listed in |src_relative_paths| are relative
-// to the |src_dir| and will be used as the file names in the created zip file.
-// All source paths must be under |src_dir| in the file system hierarchy.
+// descriptor |dest_fd|, without taking ownership of |dest_fd|. The paths listed
+// in |src_relative_paths| are relative to the |src_dir| and will be used as the
+// file names in the created zip file. All source paths must be under |src_dir|
+// in the file system hierarchy.
 bool ZipFiles(const base::FilePath& src_dir,
               const std::vector<base::FilePath>& src_relative_paths,
               int dest_fd);