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There's two possible stable values for |titleY_|,
kPrimaryTextPosTop - when status message is visible,
kPrimaryTextOnlyPosTop - when status message is not visible.

There was an inconistency how this was being initialized -
as isStatusTextVisible_ was being set to NO but the value
was set to kPrimaryTextPosTop.

The text would then be misaligned if the code would take
the -hideSecondaryTitle in -setStateFromDownload:.

This CL fixes the issue and updates the test to check this.

BUG=484848

Review URL: https://codereview.chromium.org/1130903004

Cr-Commit-Position: refs/heads/master@{#329305}