Make lines a special case in GrShape

src/gpu/batches/GrAADistanceFieldPathRenderer.cpp

Index: src/gpu/batches/GrAADistanceFieldPathRenderer.cpp
diff --git a/src/gpu/batches/GrAADistanceFieldPathRenderer.cpp b/src/gpu/batches/GrAADistanceFieldPathRenderer.cpp
index b178a68107965ba1e0fbca8e5fd18d14cc33ea6b..eb6a67dc20c9f32cc73c1c98494854ef6a1b7223 100644
--- a/src/gpu/batches/GrAADistanceFieldPathRenderer.cpp
+++ b/src/gpu/batches/GrAADistanceFieldPathRenderer.cpp
@@ -109,8 +109,7 @@ bool GrAADistanceFieldPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) c
     // scaled to have bounds within 2.0f*kLargeMIP by 2.0f*kLargeMIP
     // the goal is to accelerate rendering of lots of small paths that may be scaling
     SkScalar maxScale = args.fViewMatrix->getMaxScale();
-    SkRect bounds;
-    args.fShape->styledBounds(&bounds);
+    SkRect bounds = args.fShape->styledBounds();
     SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height());
 
     return maxDim <= kMediumMIP && maxDim * maxScale <= 2.0f*kLargeMIP;