Fix mangling of zlib API on 64 bit platforms.

Fix mangling of zlib API on 64 bit platforms.

It seems https://codereview.chromium.org/8954009/ was a bit
overzealous. On 64 bit platforms, zlib.h attempts to use the 64 bit
API for all callers. But, we were not allowing that, making writing
portable code difficult. This CL updates our manglings in zlib.h so
that on a 64 bit platform the API defaults to the 64 bit version, as
intended.

This change is downstream of https://codereview.chromium.org/13564004/
and must land after it.

R=rsleevi@chromium.org,agl@chromium.org, brettw@chromium.org
BUG=None


Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=193371

[gavinp, 2013-04-08 11:31:21]

After this change, we can now use crc32_combine and adler32_combine safely.

[agl, 2013-04-08 14:32:05]

lgtm

If it compiles then LGTM.

[gavinp, 2013-04-09 07:45:29]

brettw: can you give an OWNERS review as zlib has no OWNERS currently?

[gavinp, 2013-04-09 07:47:08]

On 2013/04/09 07:45:29, gavinp wrote:
> brettw: can you give an OWNERS review as zlib has no OWNERS currently?

Feel free to review, but I just put a new OWNERS file for this in the cq.
Thanks!

[commit-bot: I haz the power, 2013-04-09 17:32:34]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gavinp@chromium.org/13473020/17001

[commit-bot: I haz the power, 2013-04-09 19:27:26]

Retried try job too often on linux_chromeos for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_chro...

[commit-bot: I haz the power, 2013-04-10 09:32:38]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gavinp@chromium.org/13473020/17001

[commit-bot: I haz the power, 2013-04-10 11:14:10]

Retried try job too often on linux_chromeos for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_chro...

[commit-bot: I haz the power, 2013-04-10 11:15:06]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gavinp@chromium.org/13473020/17001

[commit-bot: I haz the power, 2013-04-10 12:25:37]

Change committed as 193371