NaCl SDK] nacl_io: remove getcwd() implemenation (rely on glibc/newlib versions)
The newlib version of getcwd in libnacl now supports
passing NULL of buffer, and recent version of gtest
will gracefully handle getcwd failure in static
constructors so we no longer need our own getcwd
implementation.
This is the second attempt and landing this change. The
first was reverted:
https://codereview.chromium.org/
756333005
R=bradnelson
Review URL: https://codereview.chromium.org/
851723004
Cr-Commit-Position: refs/heads/master@{#311329}