Add chromium_builder_nacl_sdk target to all.gyp.

Add chromium_builder_nacl_sdk target to all.gyp.

This will be used to build Chrome for testing on the NaCl SDK bots. It includes
nacl64.exe on Windows.

BUG=none
R=bradnelson@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=257220

[bradn, 2014-03-13 19:38:56]

LGTM

So this dependency not being there by default from chrome to nacl might be
something worth changing at this point. In the distant past we couldn't assume
all chrome developers on windows had the 64-bit compiler installed, but that's
probably not true anymore. Then again we can fix it as we transition to gn.

[binji, 2014-03-13 22:41:23]

The CQ bit was checked by binji@chromium.org

[commit-bot: I haz the power, 2014-03-13 22:41:53]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/binji@chromium.org/198973004/1

[commit-bot: I haz the power, 2014-03-13 22:46:35]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-13 22:46:35]

Try jobs failed on following builders:
  tryserver.chromium on linux_chromium_chromeos_rel

[binji, 2014-03-14 16:03:26]

The CQ bit was checked by binji@chromium.org

[commit-bot: I haz the power, 2014-03-14 16:03:37]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/binji@chromium.org/198973004/1

[commit-bot: I haz the power, 2014-03-14 17:29:15]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-14 17:29:16]

Retried try job too often on win_rel for step(s) net_unittests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[binji, 2014-03-14 17:36:45]

The CQ bit was checked by binji@chromium.org

[commit-bot: I haz the power, 2014-03-14 17:37:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/binji@chromium.org/198973004/1

[commit-bot: I haz the power, 2014-03-14 21:58:04]

Change committed as 257220