[iOS][Translate] Adds EarlGrey tests for the new translate infobar (part 2)

Adds tests for:

1. Auto Always translate (incl. max tries)
2. Never translate language
3. Auto Never translate (incl. max tries)
4. Never translate site


Bug: 910994
Change-Id: Ice90d639afd1f48dbdace62f6da8932f7b78d185
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1521592
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: anthonyvd <anthonyvd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#642911}
3 files changed