Crosperf: Fix many broken unittests.

Apparently people have been making changes and not running the
unittests; many of the unittests were suffering from bit-rot. This
CL fixes most of the broken unittests (there are still 3 large ones
being worked on -- that will be in another CL).

BUG=chromium:567883
TEST=Verified that these unittests work now.

Change-Id: I0252a276a035894e70e04c61339cdba148c9bbfd
Reviewed-on: https://chrome-internal-review.googlesource.com/241513
Commit-Ready: Luis Lozano <llozano@chromium.org>
Tested-by: Luis Lozano <llozano@chromium.org>
Reviewed-by: Luis Lozano <llozano@chromium.org>
13 files changed