Revert 229150 "Roll cygwin for python 2.7.5 fix."

> Roll cygwin for python 2.7.5 fix.
> 
> R=maruel@chromium.org, bradnelson@chromium.org
> BUG=304949
> 
> Review URL: https://codereview.chromium.org/26893007

TBR=mmoss@chromium.org

Review URL: https://codereview.chromium.org/26893010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229185 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229187 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229185
SVN changes up to revision 229187