Fix instances where hwaa was wrong for mixed samples

src/gpu/batches/GrAAHairLinePathRenderer.cpp

Index: src/gpu/batches/GrAAHairLinePathRenderer.cpp
diff --git a/src/gpu/batches/GrAAHairLinePathRenderer.cpp b/src/gpu/batches/GrAAHairLinePathRenderer.cpp
index 750c1f130481c190598840bec83cab1f47dcc14e..2faf1afa14ce99bf8658c12f9ff2c0ff232a3d7c 100644
--- a/src/gpu/batches/GrAAHairLinePathRenderer.cpp
+++ b/src/gpu/batches/GrAAHairLinePathRenderer.cpp
@@ -972,8 +972,7 @@ bool GrAAHairLinePathRenderer::onDrawPath(const DrawPathArgs& args) {
     SkAutoTUnref<GrDrawBatch> batch(create_hairline_batch(args.fColor, *args.fViewMatrix, *args.fPath,
                                                           *args.fStyle, devClipBounds));
 
-    GrPipelineBuilder pipelineBuilder(*args.fPaint,
-                                      args.fDrawContext->isStencilBufferMultisampled());
+    GrPipelineBuilder pipelineBuilder(*args.fPaint, args.fDrawContext->isUnifiedMultisampled());
     pipelineBuilder.setUserStencil(args.fUserStencilSettings);
 
     args.fDrawContext->drawBatch(pipelineBuilder, *args.fClip, batch);