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/GrAAFillRectOp.cpp b/src/gpu/ops/GrAAFillRectOp.cpp
index 9d328c9..d0976a0 100644
--- a/src/gpu/ops/GrAAFillRectOp.cpp
+++ b/src/gpu/ops/GrAAFillRectOp.cpp
@@ -228,7 +228,7 @@
     }
 
 private:
-    void onPrepareDraws(Target* target) const override {
+    void onPrepareDraws(Target* target) override {
         using namespace GrDefaultGeoProcFactory;
 
         Color color(Color::kPremulGrColorAttribute_Type);