Revert 235842 "fix android build by adding build_config.h"

> fix android build by adding build_config.h
> 
> BUG=none
> TBR=dewittj@chromium.org
> 
> Review URL: https://codereview.chromium.org/75663003

TBR=estade@chromium.org

Review URL: https://codereview.chromium.org/66973004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235878 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235878
Revert 235823 "Add a timezone utility file to base/."

> 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
> 
> Review URL: https://codereview.chromium.org/26315008

TBR=estade@chromium.org

Review URL: https://codereview.chromium.org/62333030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235879 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235879