Adjusting slow tests based on bot results

Now that https://chromium-review.googlesource.com/c/593847 has landed,
there will be a short period where failing tests need to be ironed out.
Adding a few more slow tests.

[email protected]

Bug: 726075
Change-Id: I3433b0ebd09e576a0838888ceaea48a3b45cf52f
Reviewed-on: https://chromium-review.googlesource.com/615608
Reviewed-by: Alexis Hétu <[email protected]>
Commit-Queue: Alexis Hétu <[email protected]>
Cr-Commit-Position: refs/heads/master@{#494493}
1 file changed