Remove CHROME_EG_ASSERT_NO_ERROR usage from tab_usage_recorder_test_util.mm

Local helpers can assert inside. Existance of CHROME_EG_ASSERT_NO_ERROR
will not prevent people from asserting outside of the tests.

Bug: 963613
Change-Id: I13230d5ab79eaac442055f22bf069cfc28dedcda
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1658636
Auto-Submit: Eugene But <eugenebut@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#669393}
3 files changed