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The custom visibility handling was introduced in
https://chromium-review.googlesource.com/c/chromium/src/+/1443011.  The
accessibility issue (tooltip shown for an invisible label) does not
reproduce anymore.  The issue of interfering with dragging is still
there, so we keep the workaround for that.

Bug: 985303
Change-Id: I2a8380aa68c7bebe837246b672625d21b774cdb6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575026
Commit-Queue: Wojciech Dzierżanowski <wdzierzanowski@opera.com>
Reviewed-by: François Beaufort <beaufort.francois@gmail.com>
Cr-Commit-Position: refs/heads/master@{#835650}