retry r235823 with more lax unit test.

retry r235823 with more lax unit test.
Add a timezone utility file to base/.

Currently there's just one function exported, which checks the system timezone and returns a 2-character ASCII country code for it.

BUG=303368
R=isherman@chromium.org
TBR=jshin@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=237117

[Ilya Sherman, 2013-11-22 22:42:17]

Where'd the .gyp changes go?  It would be helpful if you could upload a patch
set that was the original CL, and then another one that's the diff on top of
that.

[Evan Stade, 2013-11-22 23:06:09]

dunno where the gyp changes went. Fixed. Patchset 2 is the previous commit.
Patchset 3 is the new CL.

[Ilya Sherman, 2013-11-22 23:12:22]

Thanks, LGTM (though I'm not an owner).

[Evan Stade, 2013-11-25 19:20:35]

Committed patchset #3 manually as r237117 (presubmit successful).