Make //device pass "gn check"

Review URL: https://codereview.chromium.org/1484643002

Cr-Original-Commit-Position: refs/heads/master@{#363307}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: bda835b5af97a7fce770017890354c00ca50f557