Move GrProcessorSet into GrPipeline

Change-Id: Ibfa5e1adda3c32140590aa62a31d35654cef79dd
Reviewed-on: https://skia-review.googlesource.com/28187
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/ops/GrDrawAtlasOp.h b/src/gpu/ops/GrDrawAtlasOp.h
index bec2eb1..7c3bceb 100644
--- a/src/gpu/ops/GrDrawAtlasOp.h
+++ b/src/gpu/ops/GrDrawAtlasOp.h
@@ -40,7 +40,7 @@
     RequiresDstTexture finalize(const GrCaps& caps, const GrAppliedClip* clip) override;
 
 private:
-    void onPrepareDraws(Target*) const override;
+    void onPrepareDraws(Target*) override;
 
     GrColor color() const { return fColor; }
     const SkMatrix& viewMatrix() const { return fViewMatrix; }