Start to propagate constness of GrPipelineBuilder up the stack

src/gpu/GrAALinearizingConvexPathRenderer.cpp

Index: src/gpu/GrAALinearizingConvexPathRenderer.cpp
diff --git a/src/gpu/GrAALinearizingConvexPathRenderer.cpp b/src/gpu/GrAALinearizingConvexPathRenderer.cpp
index f9174cedeb6eea087ab8025a6f22c67b6d6f9af6..31d61a42574b5ba5c4c5003dbd50aa081a640e57 100644
--- a/src/gpu/GrAALinearizingConvexPathRenderer.cpp
+++ b/src/gpu/GrAALinearizingConvexPathRenderer.cpp
@@ -318,7 +318,7 @@ bool GrAALinearizingConvexPathRenderer::onDrawPath(GrDrawTarget* target,
     geometry.fMiterLimit = stroke.getMiter();
 
     SkAutoTUnref<GrBatch> batch(AAFlatteningConvexPathBatch::Create(geometry));
-    target->drawBatch(pipelineBuilder, batch);
+    target->drawBatch(*pipelineBuilder, batch);
 
     return true;
 }