Move geometric types to a separate, more lightweight target.

R=sky@chromium.org
http://crbug.com/327489

Review URL: https://codereview.chromium.org/109433013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241649 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241649