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Revert of Tests that the title only ever gets replaced for the current page. (patchset #2 id:20001 of https://codereview.chromium.org/1137773003/)

Reason for revert:
We're seeing crashes; this looks to be the wrong approach.

Original issue's description:
> Tests that the title only ever gets replaced for the current page.
>
> BUG=369661
> TEST=All tests remain green.
>
> Committed: https://crrev.com/e5fab09f6e313f78d4113e4d4fe0ce3b38ce0ca5
> Cr-Commit-Position: refs/heads/master@{#329414}

TBR=creis@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=369661

Review URL: https://codereview.chromium.org/1144443005

Cr-Commit-Position: refs/heads/master@{#329686}