Make GrFragmentProcessor be non-refcounted and use std::unique_ptr.

Change-Id: I985e54a071338e99292a5aa2f42c92bc115b4008
Reviewed-on: https://skia-review.googlesource.com/32760
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
diff --git a/src/gpu/GrPipeline.h b/src/gpu/GrPipeline.h
index 7583c6c..c431995 100644
--- a/src/gpu/GrPipeline.h
+++ b/src/gpu/GrPipeline.h
@@ -230,8 +230,7 @@
 
     using RenderTargetProxy = GrPendingIOResource<GrRenderTargetProxy, kWrite_GrIOType>;
     using DstTextureProxy = GrPendingIOResource<GrTextureProxy, kRead_GrIOType>;
-    using PendingFragmentProcessor = GrPendingProgramElement<const GrFragmentProcessor>;
-    using FragmentProcessorArray = SkAutoSTArray<8, PendingFragmentProcessor>;
+    using FragmentProcessorArray = SkAutoSTArray<8, std::unique_ptr<const GrFragmentProcessor>>;
 
     DstTextureProxy fDstTextureProxy;
     SkIPoint fDstTextureOffset;