This way we don't have to rely on the existence of DEPS, and the tests can be run in swarming bots (which don't have a checkout and therefore don't have a DEPS file). This seems to be where Chromium is assumming the project root path to be. NOTRY=True BUG=chromium:497757 Review-Url: https://codereview.webrtc.org/2340773002 Cr-Commit-Position: refs/heads/master@{#14230}