Allow WMware software renderer with newer Mesa drivers in Linux

Currently it's anything equal or newer than 9.2.1

BUG=332596
TEST=
R=kbr@chromium.org

Review URL: https://codereview.chromium.org/130153002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243940 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243940