Revert of NaCl: Update revision in DEPS, 945d33419 -> 939a13aa3

Revert of NaCl: Update revision in DEPS, 945d33419 -> 939a13aa3 (patchset #1 id:1 of https://codereview.chromium.org/881893003/)

Reason for revert:
Caused http://crbug.com/452846

Original issue's description:
> NaCl: Update revision in DEPS, 945d33419 -> 939a13aa3
>
> This pulls in the following Native Client changes:
>
> 939a13a (teravest@chromium.org) Provide an irt_core_lib GN target.
> dbf2af4 (sbc@chromium.org) Remove include of build_config.h from nacl_exception.h
> e205317 (jfb@chromium.org) PNaCl: Update LLVM revision in pnacl/COMPONENT_REVISIONS
> 7c8a96b (jfb@chromium.org) Update revision for PNaCl
> 3d00a54 (jfb@chromium.org) PNaCl: Update LLVM revision in pnacl/COMPONENT_REVISIONS
> 1de8ba8 (mseaborn@chromium.org) Update codereview.settings following the switch from SVN to Git
> 7a6cf46 (jfb@chromium.org) Update revision for PNaCl
> bc28c0b (jvoung@chromium.org) Fix the native_client URL in the PNaCl REV file.
> f8aa9dc (bradnelson@google.com) Adding le32-nacl build of pnacl tools.
> cfda521 (teravest@chromium.org) Explicitly include build_config.h.
> 61b7ba9 (teravest@chromium.org) Output depfile from build_nexe.
> 2d65c23 (jfb@chromium.org) PNaCl: Update LLVM and Subzero revision in pnacl/COMPONENT_REVISIONS
> 5f5cd88 (sbc@chromium.org) Fix PNaCl redirectors for i686-nacl-xx -> x86_64-nacl-xx
> 1baa204 (jvoung@chromium.org) Remove some more dead code and variables from pnacl/build.sh.
> f116471 (dschuff@chromium.org) Update revision for PNaCl
> 01f3d97 (teravest@chromium.org) Always define product_dir in build_nexe.
> 8a5a846 (mseaborn@chromium.org) Remove the IRT's now-unneeded call to NaClSrpcModuleInit()
> c14b58a (mseaborn@chromium.org) Remove NaClPluginLowLevelInitializationComplete() (caller of "init_done" SRPC)
> c5d8394 (bradnelson@google.com) Change driver bash scripts to work in devenv.
> 490e554 (dschuff@chromium.org) PNaCl: Update Clang revision in pnacl/COMPONENT_REVISIONS
> 2a7391a (sbc@chromium.org) Fix several issues with update_pnacl_tool_revisions.py
> fbc3b5c (dschuff@chromium.org) Support filenames with spaces in the PNaCl driver scripts.
> 4f726e8 (sbc@chromium.org) PNaCl: Update Clang revision in pnacl/COMPONENT_REVISIONS
> 28a1341 (dschuff@chromium.org) Move pnacl driver test runs from buildbot_pnacl.sh to buildbot_pnacl_toolchain.py
> 9f9d773 (sbc@chromium.org) Update GCC revision in tools/REVISIONS
> 29ae54a (jfb@chromium.org) Update revision for PNaCl
>
> BUG=none
> TEST=browser_tests and nacl_integration
> CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:linux_rel_precise32,linux_arm_compile,linux_nacl_sdk_build
>
> Committed: https://crrev.com/4a8dee9ac9fd757f776f76a651d921f347305e82
> Cr-Commit-Position: refs/heads/master@{#313447}

TBR=mseaborn@chromium.org,jfb@chromium.org,bradnelson@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=none

Committed: https://crrev.com/ff2a50a4c6664a73e7d6970efde8b6c1f8a05d7d
Cr-Commit-Position: refs/heads/master@{#313518}

[Nico, 2015-01-28 15:46:01]

Created Revert of NaCl: Update revision in DEPS, 945d33419 -> 939a13aa3

[commit-bot: I haz the power, 2015-01-28 15:46:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/886513002/1

[commit-bot: I haz the power, 2015-01-28 15:47:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-28 15:48:05]

Patchset 1 (id:??) landed as
https://crrev.com/ff2a50a4c6664a73e7d6970efde8b6c1f8a05d7d
Cr-Commit-Position: refs/heads/master@{#313518}

[JF, 2015-01-28 16:05:50]

lgtm