SkNonCopyable should be used with private inheritance.

src/gpu/gl/GrGLBufferImpl.h

Index: src/gpu/gl/GrGLBufferImpl.h
diff --git a/src/gpu/gl/GrGLBufferImpl.h b/src/gpu/gl/GrGLBufferImpl.h
index ab2555650f1ed50d0cfe7bd7801f712cf1e0210b..148ca1b2ee6b4c1af0e6b812094f56fc0a23e096 100644
--- a/src/gpu/gl/GrGLBufferImpl.h
+++ b/src/gpu/gl/GrGLBufferImpl.h
@@ -17,7 +17,7 @@ class GrGpuGL;
  * This class serves as the implementation of GrGL*Buffer classes. It was written to avoid code
  * duplication in those classes.
  */
-class GrGLBufferImpl : public SkNoncopyable {
+class GrGLBufferImpl : SkNoncopyable {
 public:
     struct Desc {
         bool        fIsWrapped;