Bump the max atlas path size to 256 for non-MSAA

When we don't have MSAA to fall back on (e.g., for clipping), we
benefit from allowing larger paths in the atlas.

Bug: skia:12258
Change-Id: I6decb7c5dd092b5e350e9f5701e05df5680a52f0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/432076
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
diff --git a/src/gpu/GrSurfaceContext.h b/src/gpu/GrSurfaceContext.h
index d9946e0..90d93ee 100644
--- a/src/gpu/GrSurfaceContext.h
+++ b/src/gpu/GrSurfaceContext.h
@@ -74,7 +74,7 @@
 
     virtual ~GrSurfaceContext() = default;
 
-    GrRecordingContext* recordingContext() { return fContext; }
+    GrRecordingContext* recordingContext() const { return fContext; }
 
     const GrColorInfo& colorInfo() const { return fColorInfo; }
     GrImageInfo imageInfo() const { return {fColorInfo, fReadView.proxy()->dimensions()}; }