Add convenience overload of SkPointPriv::SetRectTriStrip that takes SkRect

Change-Id: Idf5bfafaf19c20f074f12d706b8b8984c5935e6d
Reviewed-on: https://skia-review.googlesource.com/129185
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/ops/GrSmallPathRenderer.cpp b/src/gpu/ops/GrSmallPathRenderer.cpp
index 3e21348..48de75a 100644
--- a/src/gpu/ops/GrSmallPathRenderer.cpp
+++ b/src/gpu/ops/GrSmallPathRenderer.cpp
@@ -758,12 +758,7 @@
             position = (SkPoint*)positionOffset;
             *position = quad.point(3);
         } else {
-            SkPointPriv::SetRectTriStrip(positions,
-                                         translatedBounds.left(),
-                                         translatedBounds.top(),
-                                         translatedBounds.right(),
-                                         translatedBounds.bottom(),
-                                         vertexStride);
+            SkPointPriv::SetRectTriStrip(positions, translatedBounds, vertexStride);
         }
 
         // colors