Remove GG_VA_COPY in favor of va_copy

Remove GG_VA_COPY in favor of va_copy

This was a workaround for VS's before 2013 that lack va_copy, and is
no longer required. The unittest is removed as it seems unnecessary
to test the standard library's implementation of va_copy.

R=thakis@chromium.org
TBR=cpu@chromium.org

Committed: https://crrev.com/5cfb9efaa9d3b9b9d824d5809c0c6ede65757d4e
Cr-Commit-Position: refs/heads/master@{#307991}

[Nico, 2014-12-11 20:11:18]

lgtm

[scottmg, 2014-12-11 20:13:44]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2014-12-11 20:14:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/802533002/1

[Mark Mentovai, 2014-12-11 20:17:33]

mark@chromium.org changed reviewers:
+ mark@chromium.org

[Mark Mentovai, 2014-12-11 20:17:34]

LGTM

[Mark Mentovai, 2014-12-11 20:19:36]

https://codereview.chromium.org/802533002/diff/1/base/port.h
File base/port.h (right):

https://codereview.chromium.org/802533002/diff/1/base/port.h#newcode8
base/port.h:8: #include <stdarg.h>
Remove this and #include it where stdarg functionality is used?

[scottmg, 2014-12-11 20:26:58]

https://codereview.chromium.org/802533002/diff/1/base/port.h
File base/port.h (right):

https://codereview.chromium.org/802533002/diff/1/base/port.h#newcode8
base/port.h:8: #include <stdarg.h>
On 2014/12/11 20:19:36, Mark Mentovai wrote:
> Remove this and #include it where stdarg functionality is used?

OK, I'll do that as a followup as it'll likely touch a lot of files.

[scottmg, 2014-12-11 20:27:27]

scottmg@chromium.org changed reviewers:
+ cpu@chromium.org

[scottmg, 2014-12-11 20:27:41]

tbr cpu for third_party/ changes

[commit-bot: I haz the power, 2014-12-11 23:10:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-11 23:11:57]

Patchset 1 (id:??) landed as
https://crrev.com/5cfb9efaa9d3b9b9d824d5809c0c6ede65757d4e
Cr-Commit-Position: refs/heads/master@{#307991}