Rename *worstCase* to backingStore* in GrSurfaceProxy

These names are more appropriate after:

https://skia-review.googlesource.com/c/skia/+/241356 (Always create an approx-size texture for approx-fit proxies))

Note that this CL does have one substantive change in GrCoordTransform::hasSameEffectAs where we use our knowledge of the size at which the backing stores will be allocated to remove a sly usage of GrSurfaceProxy::underlyingUniqueID.

Change-Id: Ibbb8cb23c4503f267abbdf4794610f3262a6f515
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/250257
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
diff --git a/src/gpu/ops/GrDefaultPathRenderer.cpp b/src/gpu/ops/GrDefaultPathRenderer.cpp
index 6e4b241..22d044c 100644
--- a/src/gpu/ops/GrDefaultPathRenderer.cpp
+++ b/src/gpu/ops/GrDefaultPathRenderer.cpp
@@ -588,7 +588,7 @@
     SkScalar srcSpaceTol = GrPathUtils::scaleToleranceToSrc(tol, viewMatrix, path.getBounds());
 
     SkRect devBounds;
-    GetPathDevBounds(path, renderTargetContext->asRenderTargetProxy()->worstCaseDimensions(),
+    GetPathDevBounds(path, renderTargetContext->asRenderTargetProxy()->backingStoreDimensions(),
                      viewMatrix, &devBounds);
 
     for (int p = 0; p < passCount; ++p) {