Make all our package sources use Go 1.17 gofmt format
(adding //go:build lines).
Not strictly necessary but will avoid spurious changes
as files are edited.
Part of //go:build change (#41184).
See https://golang.org/design/draft-gobuild
Change-Id: I22803ea9e936fbb08984a64155302f47e181de27
Reviewed-on: https://go-review.googlesource.com/c/oauth2/+/294420
Trust: Russ Cox <rsc@golang.org>
Trust: Cody Oss <codyoss@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cody Oss <codyoss@google.com>
This function added a totally unused error path, since the only call
site is for App Engine, which cannot produce an error.
Change-Id: I86277ab4ff96e7bd140c53c5a114a338716668e3
Reviewed-on: https://go-review.googlesource.com/85935
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>