Update trusted clang from 209387 to 223109.

Update trusted clang from 209387 to 223109.

Newer than what we have and will at least match the upcoming
PNaCl clang revision after merging.

Otherwise, the old trusted 209387 clang currently crashes
while trying to compile to compile LLVM unittests from 223109
when paired with libc++ at ~223109. The MakeUniqueTest
will crash the 209387 clang.

Had to disable a new clang warning for now. Too much
upstream LLVM code that violates it. Will re-enable
after merging.


BUG= https://code.google.com/p/nativeclient/issues/detail?id=4026

Committed: https://chromium.googlesource.com/native_client/src/native_client/+/df23dd238cbe460892fea8522d7b25ddb6bb57bb

[jvoung (off chromium), 2015-02-03 18:00:38]

jvoung@chromium.org changed reviewers:
+ bradnelson@chromium.org, jfb@chromium.org

[jvoung (off chromium), 2015-02-03 18:01:20]

Didn't test the asan bots yet, but have a separate CL for that
https://codereview.chromium.org/894413002/

[JF, 2015-02-03 18:26:26]

lgtm

[bradn, 2015-02-03 18:28:53]

bradnelson@google.com changed reviewers:
+ bradnelson@google.com

[bradn, 2015-02-03 18:28:53]

lgtm

[jvoung (off chromium), 2015-02-03 19:12:08]

The CQ bit was checked by jvoung@chromium.org

[commit-bot: I haz the power, 2015-02-03 19:12:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/886943004/20001

[commit-bot: I haz the power, 2015-02-03 21:23:48]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/native_client/src/native_client/+/df23dd238...