Revert "Make GrBicubicEffect also support centripetal Catmull-Rom kernel."

This reverts commit f9a8688b4e9b4f84545968ad17774143c209f28e.

Reason for revert: breaking processor unit tests

Original change's description:
> Make GrBicubicEffect also support centripetal Catmull-Rom kernel.
> 
> Use new kernel in async rescale APIs.
> 
> Bug: skia:8962
> Change-Id: Ife8f56f54b5df58cedd65b54083c7c0716b8c633
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/216352
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>

TBR=bsalomon@google.com,brianosman@google.com

Change-Id: Idf317e76b870407060113dc60dd3776abc07f810
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:8962
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/220751
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/effects/GrConvexPolyEffect.h b/src/gpu/effects/GrConvexPolyEffect.h
index 223c801..2bb3373 100644
--- a/src/gpu/effects/GrConvexPolyEffect.h
+++ b/src/gpu/effects/GrConvexPolyEffect.h
@@ -13,6 +13,7 @@
 #include "src/gpu/GrFragmentProcessor.h"
 #include "src/gpu/GrProcessor.h"
 
+class GrInvariantOutput;
 class SkPath;
 
 /**