Simplify parameters passed to path renderers

src/gpu/GrAAHairLinePathRenderer.cpp

Index: src/gpu/GrAAHairLinePathRenderer.cpp
diff --git a/src/gpu/GrAAHairLinePathRenderer.cpp b/src/gpu/GrAAHairLinePathRenderer.cpp
index 1a3318b887b96b64323a7f161c563cc0d9ade1d9..fea6ef6b1dc616d24bd23879ce9129248dcf1746 100644
--- a/src/gpu/GrAAHairLinePathRenderer.cpp
+++ b/src/gpu/GrAAHairLinePathRenderer.cpp
@@ -627,7 +627,7 @@ bool GrAAHairLinePathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const
     }
 
     if (SkPath::kLine_SegmentMask == args.fPath->getSegmentMasks() ||
-        args.fTarget->caps()->shaderCaps()->shaderDerivativeSupport()) {
+        args.fShaderCaps->shaderDerivativeSupport()) {
         return true;
     }
     return false;