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/effects/generated/GrRectBlurEffect.cpp b/src/gpu/effects/generated/GrRectBlurEffect.cpp
index 8ba9506..7643406 100644
--- a/src/gpu/effects/generated/GrRectBlurEffect.cpp
+++ b/src/gpu/effects/generated/GrRectBlurEffect.cpp
@@ -132,8 +132,8 @@
         (void)rectF;
         UniformHandle& rectH = rectHVar;
         (void)rectH;
-        const GrSurfaceProxyView& integralView = _outer.textureSampler(0).view();
-        GrTexture& integral = *integralView.proxy()->peekTexture();
+        GrSurfaceProxy& integralProxy = *_outer.textureSampler(0).proxy();
+        GrTexture& integral = *integralProxy.peekTexture();
         (void)integral;
         UniformHandle& invSixSigma = invSixSigmaVar;
         (void)invSixSigma;