Simplify parameters passed to path renderers

src/gpu/GrAAConvexPathRenderer.cpp

Index: src/gpu/GrAAConvexPathRenderer.cpp
diff --git a/src/gpu/GrAAConvexPathRenderer.cpp b/src/gpu/GrAAConvexPathRenderer.cpp
index 9850ddc48cdff100a7ba52840d7b0b0dd04abc6b..0264cf5d4e19ffd0f15b78ca7123e594f2511e87 100644
--- a/src/gpu/GrAAConvexPathRenderer.cpp
+++ b/src/gpu/GrAAConvexPathRenderer.cpp
@@ -679,7 +679,7 @@ GrGeometryProcessor* QuadEdgeEffect::TestCreate(GrProcessorTestData* d) {
 ///////////////////////////////////////////////////////////////////////////////
 
 bool GrAAConvexPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
-    return (args.fTarget->caps()->shaderCaps()->shaderDerivativeSupport() && args.fAntiAlias &&
+    return (args.fShaderCaps->shaderDerivativeSupport() && args.fAntiAlias &&
             args.fStroke->isFillStyle() && !args.fPath->isInverseFillType() &&
             args.fPath->isConvex());
 }