move makeAtlasTextOp to SubRun

When SubRun is sub classable, makeAtlasTextOp will be part of
the virtual API.

Change-Id: Ib316bca200de38c5aba64e0bef5fa43966e6f13a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/301983
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Herb Derby <herb@google.com>
diff --git a/src/gpu/ops/GrAtlasTextOp.cpp b/src/gpu/ops/GrAtlasTextOp.cpp
index 6714077..71c4c60 100644
--- a/src/gpu/ops/GrAtlasTextOp.cpp
+++ b/src/gpu/ops/GrAtlasTextOp.cpp
@@ -509,7 +509,7 @@
 
     std::unique_ptr<GrDrawOp> op;
     std::tie(std::ignore, op) =
-            rtc->makeAtlasTextOp(nullptr, mtxProvider, glyphRunList, blob->firstSubRun());
+            blob->firstSubRun()->makeAtlasTextOp(nullptr, mtxProvider, glyphRunList, rtc);
     return op;
 }