shape ops work in progress

git-svn-id: http://skia.googlecode.com/svn/trunk@7738 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/Intersection/LineUtilities.h b/experimental/Intersection/LineUtilities.h
index 6052875..d1d4570 100644
--- a/experimental/Intersection/LineUtilities.h
+++ b/experimental/Intersection/LineUtilities.h
@@ -12,6 +12,7 @@
 void sub_divide(const _Line& src, double t1, double t2, _Line& dst);
 double t_at(const _Line&, const _Point& );
 void xy_at_t(const _Line& , double t, double& x, double& y);
+_Point xy_at_t(const _Line& , double t);
 
 enum x_at_flags {
     kFindTopMin = 1,