testplan: Replace proto.MessageReflect with standard Go reflect.

- The dev-go/protobuf ebuild installs v1.3.2 of the
github.com/golang/protobuf package, which does not contain the
MessageReflect function. Bumping the version of this package broke
dependent packages. Use the standard reflect package instead.

- In the future, a better fix might be fixing the dependent
packages or installing multiple versions of the protobuf package.

TEST=`emerge test-plan`
TEST=`go test ./...`

Change-Id: Iabec1dc81f1d80cf88867563325bab18d733217b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2949113
Reviewed-by: Jaques Clapauch <jaquesc@google.com>
Reviewed-by: C Shapiro <shapiroc@chromium.org>
Commit-Queue: Andrew Lamb <andrewlamb@chromium.org>
Tested-by: Andrew Lamb <andrewlamb@chromium.org>
2 files changed