GrTessellator: rename intersection check args.

Now that there's a required ordering of the arguments to
check_for_intersection(), rename the parameters to match.
Cosmetic change only.

Change-Id: I68f6ae0b6e5f89a3344048cf73fedabded9ed138
Reviewed-on: https://skia-review.googlesource.com/134823
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
1 file changed