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

This is a reland of e09772febe2b5c90401970716dbc429f9c17f5ee

The original CL was reverted because testInfobarAutoNeverTranslateMaxTries was
timing out. That test is disabled in this reland.

Original change's description:
> [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}

Bug: 910994
Change-Id: I06bbc66da0066690884706787b8fad1a543c455e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1538708
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: anthonyvd <anthonyvd@chromium.org>
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#644815}
3 files changed