This CL adds a test that method expressions where the receiver type is
a derived type and embeds a promoted method work correctly.
Change-Id: I2e7c96007b6d9e6f942dc14228970ac508ff5c15
Reviewed-on: https://go-review.googlesource.com/c/go/+/422199
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>