Cleanup after removal of IORefs from GrSurface

The removal of IORefs from GrSurface makes a lot of other cruft obsolete.

Change-Id: I0e02d680a17dc4f4ec705cb6ee4c294738271e28
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/239919
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrGpuResourceCacheAccess.h b/src/gpu/GrGpuResourceCacheAccess.h
index 03edec9..b18949c 100644
--- a/src/gpu/GrGpuResourceCacheAccess.h
+++ b/src/gpu/GrGpuResourceCacheAccess.h
@@ -55,7 +55,7 @@
     /** Called by the cache to assign a new unique key. */
     void setUniqueKey(const GrUniqueKey& key) { fResource->fUniqueKey = key; }
 
-    /** Is the resource ref'ed (not counting pending IOs). */
+    /** Is the resource ref'ed */
     bool hasRef() const { return fResource->hasRef(); }
 
     /** Called by the cache to make the unique key invalid. */