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/GrYUVProvider.cpp b/src/gpu/GrYUVProvider.cpp
index f3d259b..93eb6ab 100644
--- a/src/gpu/GrYUVProvider.cpp
+++ b/src/gpu/GrYUVProvider.cpp
@@ -159,7 +159,7 @@
 
     // TODO: investigate preallocating mip maps here
     sk_sp<GrRenderTargetContext> renderTargetContext(ctx->priv().makeDeferredRenderTargetContext(
-            SkBackingFit::kExact, desc.fWidth, desc.fHeight, colorType, nullptr, desc.fSampleCnt,
+            SkBackingFit::kExact, desc.fWidth, desc.fHeight, colorType, nullptr, 1,
             GrMipMapped::kNo, kTopLeft_GrSurfaceOrigin));
     if (!renderTargetContext) {
         return nullptr;