mesa should not to use X11 headers when use_x11==0

Mesa checks if MESA_EGL_NO_X11_HEADERS is defined before trying to
include X11 headers, we should set this if use_x11==0.

BUG=238755

Review URL: https://chromiumcodereview.appspot.com/20265003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@213918 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed