Disable harmless warnings for 3rdparty code: zlib.

BUG=102390

Review URL: https://chromiumcodereview.appspot.com/9240019

Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 87d45969fc3e5f2340126ddeeaa79e1050764f19
1 file changed