[libphonenumber] snprintf isn't generally in the std:: namespace

[libphonenumber] snprintf isn't generally in the std:: namespace

Due to some relatively common gnu-isms, one can often use snprintf by
calling std::snprintf.  It's not necessarily proper to do so, though,
and the ARM toolchain used on Chromium OS does not support it.

BUG=None
TEST=unit tests

R=georgey

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=91437

[Chris Masone, 2011-07-02 23:22:28]

building locally and running tryjobs now...PTAL

[Ryan Sleevi, 2011-07-02 23:25:42]

http://codereview.chromium.org/7277083/diff/1/third_party/libphonenumber/cpp/...
File third_party/libphonenumber/cpp/src/default_logger.h (right):

http://codereview.chromium.org/7277083/diff/1/third_party/libphonenumber/cpp/...
third_party/libphonenumber/cpp/src/default_logger.h:19: 
I believe it may be necessary to add

#include <stdio.h>

In order to pull in snprintf. On x86+gcc, this is handled by logger.h including
<cstdio> (which is what brings in std::snprintf). It may be that the ARM
toolchain transitively has these headers included somewhere by <string>, but to
be safe, probably easier to add the explicit include.

[Chris Masone, 2011-07-02 23:33:18]

done

[Ryan Sleevi, 2011-07-02 23:34:17]

LGTM

[commit-bot: I haz the power, 2011-07-03 01:21:00]

No LGTM from valid reviewers yet.