Fix test.gyp dependency.

BUG=

Review URL: https://codereview.webrtc.org/1907303002

Cr-Original-Commit-Position: refs/heads/master@{#12487}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 037ee92455a6e7fc01efb4397a6cdcf8e49389b4
2 files changed