Fix a bunch of mojo_public_*_unittests with the new EDK.
The unittests had baked in assumptions about implementation timings of the EDK.
This makes the following tests pass: mojo_public_bindings_unittests, mojo_public_environment_unittests, mojo_public_system_unittests and mojo_public_utility_unittests.
BUG=561803
Review URL: https://codereview.chromium.org/1552983003
Cr-Commit-Position: refs/heads/master@{#367421}
CrOS-Libchrome-Original-Commit: 0413ae3065a484364fbb8fb1b96f98e4bcc0a7c4
21 files changed