Merge to XFA: Move zlib to third_party/

(cherry picked from commit 959eb05140a8f5af7724a2da4cf5d04e2e50f4a6)
Original Review URL: https://codereview.chromium.org/1197693003.

TBR=thestig@chromium.org

Review URL: https://codereview.chromium.org/1197863002.

1 files changed, 25 insertions, 0 deletions

diff --git a/third_party/zlib_v128/gzclose.c b/third_party/zlib_v128/gzclose.c
new file mode 100644
index 0000000000..0f010b84c8
--- /dev/null
+++ b/third_party/zlib_v128/gzclose.c
@@ -0,0 +1,25 @@
+/* gzclose.c -- zlib gzclose() function
+ * Copyright (C) 2004, 2010 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "gzguts.h"
+
+/* gzclose() is in a separate file so that it is linked in only if it is used.
+   That way the other gzclose functions can be used instead to avoid linking in
+   unneeded compression or decompression routines. */
+int ZEXPORT gzclose(
+    gzFile file)
+{
+#ifndef NO_GZCOMPRESS
+    gz_statep state;
+
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+
+    return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file);
+#else
+    return gzclose_r(file);
+#endif
+}