Revert "Update FragmentProcessor TextureSampler to hold an GrSurfaceProxyView."

This reverts commit acf5929ae0addc5188117142fd3fb39828baa8d5.

Reason for revert: May be blocking Chrome roll
Original change's description:
> Update FragmentProcessor TextureSampler to hold an GrSurfaceProxyView.
> 
> In future CLs I will update the Ops that create the TextureSamplers to pass
> the GrSurfaceProxyView in.
> 
> Bug: skia:9556
> Change-Id: I550dab64974d32e4c3047188063efa2d0832328e
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259164
> Commit-Queue: Greg Daniel <egdaniel@google.com>
> Reviewed-by: Michael Ludwig <michaelludwig@google.com>

TBR=egdaniel@google.com,michaelludwig@google.com

Change-Id: Ic804a52c5c6d16a13a9cc2d85bb959f305134177
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:9556
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259433
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrProcessorSet.cpp b/src/gpu/GrProcessorSet.cpp
index 054866b..cf75415 100644
--- a/src/gpu/GrProcessorSet.cpp
+++ b/src/gpu/GrProcessorSet.cpp
@@ -255,6 +255,6 @@
 void GrProcessorSet::visitProxies(const GrOp::VisitProxyFunc& func) const {
     for (auto [sampler, fp] : GrFragmentProcessor::ProcessorSetTextureSamplerRange(*this)) {
         bool mipped = (GrSamplerState::Filter::kMipMap == sampler.samplerState().filter());
-        func(sampler.view().proxy(), GrMipMapped(mipped));
+        func(sampler.proxy(), GrMipMapped(mipped));
     }
 }