simplify GrPathRenderer interface

Review URL: http://codereview.appspot.com/5706053/



git-svn-id: http://skia.googlecode.com/svn/trunk@3312 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/gpu/GrContext.h b/include/gpu/GrContext.h
index ffb5065..37160b1 100644
--- a/include/gpu/GrContext.h
+++ b/include/gpu/GrContext.h
@@ -700,6 +700,7 @@
 
     GrPathRenderer* getPathRenderer(const GrPath& path,
                                     GrPathFill fill,
+                                    const GrDrawTarget* target,
                                     bool antiAlias);
 
     /**