Update hash to new toolchain rev

Update hash to new toolchain rev

Matches toolchain update here: https://codereview.chromium.org/169053008/
to pull missing parts of MFC.

TBR=iannucci@chromium.org
BUG=345993
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=252760

[scottmg, 2014-02-22 07:50:34]

Committed patchset #1 manually as r252760 (presubmit successful).

[iannucci, 2014-02-22 08:05:19]

rslgtm :)