Start disentangling tessellation from pipeline creation in GrTextureOp

The idea/dream here is to be able to (optionally) tessellate in onPrePrepareDraws and then just copy the prePrepared data into the vertex buffer.

Change -Id: I899eebce36dc9516bfc4b0fce5e657458167c772

Change-Id: I899eebce36dc9516bfc4b0fce5e657458167c772
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/248804
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrOpsTask.h b/src/gpu/GrOpsTask.h
index 9531ab9..c223812 100644
--- a/src/gpu/GrOpsTask.h
+++ b/src/gpu/GrOpsTask.h
@@ -50,7 +50,7 @@
      */
     void endFlush() override;
 
-    void onPrePrepare() override;
+    void onPrePrepare(GrRecordingContext*) override;
     /**
      * Together these two functions flush all queued up draws to GrCommandBuffer. The return value
      * of executeOps() indicates whether any commands were actually issued to the GPU.