NaCl: Update revision in DEPS, r13613 -> r13623

NaCl: Update revision in DEPS, r13613 -> r13623

This pulls in the following Native Client changes:

r13614: (bradnelson) Vary build settings on fastbuild + configuration + buildtype.
r13615: (bradnelson) Only pass -O2 as a link option for pnacl test pexes.
r13616: (dschuff) Build sandboxed translator with libcxx
r13617: (hidehiko) Non-SFI Mode: Fix linux_termios size.
r13618: (mseaborn) Disable the imc_socketpair() syscall by default
r13619: (mseaborn) Cleanup: Remove Python bindings for NaClDescs and IMC
r13620: (dschuff) Update revision for PNaCl r13609->r13616
r13621: (mseaborn) Disable the imc_makeboundsock() syscall by default
r13622: (dschuff) Build PNaCl debug/fastbuild IRT with O2 instead of O0
r13623: (mseaborn) Revert r13622, r13615 and r13614 (changes to the untrusted Gyp build)

BUG=none
TEST=browser_tests and nacl_integration
CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:linux_rel_precise32,linux_nacl_sdk_build

Committing with
NOTRY=true
otherwise the CQ is blocked waiting for android_aosp, which isn't affected by NaCl changes.
The other trybots are green.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=289864

[Mark Seaborn, 2014-08-14 23:40:54]

Nth time lucky...

[Mark Seaborn, 2014-08-15 00:24:47]

The CQ bit was checked by mseaborn@chromium.org

[Derek Schuff, 2014-08-15 00:25:30]

lgtm

[commit-bot: I haz the power, 2014-08-15 00:28:21]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mseaborn@chromium.org/475243002/1

[Mark Seaborn, 2014-08-15 05:59:20]

The CQ bit was unchecked by mseaborn@chromium.org

[Mark Seaborn, 2014-08-15 05:59:29]

The CQ bit was checked by mseaborn@chromium.org

[commit-bot: I haz the power, 2014-08-15 06:00:05]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mseaborn@chromium.org/475243002/1

[commit-bot: I haz the power, 2014-08-15 15:21:58]

Committed patchset #1 (1) as 289864