Remove sample count from GrSurfaceDesc.

This leaves just width, height, and GrPixelConfig. Once we remove the
latter we can replace GrSurfaceDesc with SkISize.

Also remove unused GrRenderTarget::overrideResolveRect

Also remove GrSurfaceProxy::Renderable and use GrRenderable instead.

Change-Id: I652fe6169a22ca33d199b144ec6385286ac07b5a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/228570
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/GrClipStackClip.cpp b/src/gpu/GrClipStackClip.cpp
index 3bae1b2..e5c92c5 100644
--- a/src/gpu/GrClipStackClip.cpp
+++ b/src/gpu/GrClipStackClip.cpp
@@ -498,7 +498,7 @@
 
         // MDB TODO: We're going to fill this proxy with an ASAP upload (which is out of order wrt
         // to ops), so it can't have any pending IO.
-        proxy = proxyProvider->createProxy(format, desc, GrRenderable::kNo,
+        proxy = proxyProvider->createProxy(format, desc, GrRenderable::kNo, 1,
                                            kTopLeft_GrSurfaceOrigin, SkBackingFit::kApprox,
                                            SkBudgeted::kYes, GrProtected::kNo);