More SkISizification in GPU code.

Uses SkISize instead of separate width/height variables in many places.

No functional change.

Change-Id: If87b2c57e43d810f0820c4e3c9ef8e6b8ebd10ba
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/249886
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/GrTextureProxy.cpp b/src/gpu/GrTextureProxy.cpp
index ba8530e..d9c90b7 100644
--- a/src/gpu/GrTextureProxy.cpp
+++ b/src/gpu/GrTextureProxy.cpp
@@ -144,8 +144,8 @@
 }
 
 size_t GrTextureProxy::onUninstantiatedGpuMemorySize(const GrCaps& caps) const {
-    return GrSurface::ComputeSize(caps, this->backendFormat(),  this->width(), this->height(),
-                                  1, this->proxyMipMapped(), !this->priv().isExact());
+    return GrSurface::ComputeSize(caps, this->backendFormat(), this->dimensions(), 1,
+                                  this->proxyMipMapped(), !this->priv().isExact());
 }
 
 bool GrTextureProxy::ProxiesAreCompatibleAsDynamicState(const GrTextureProxy* first,