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The comment says about desktop-linux but the ifdef includes
ChromeOS unexpectedly. Seemingly this hiding actually resolves
gotchas happening on attaching, possibly because it can exclude
the window-to-disappear properly.

Bug: 930004
Test: manually
Change-Id: I2ee10e0cbdfc4b15c168e3c3c2c51b33d0a7b563
Reviewed-on: https://chromium-review.googlesource.com/c/1460859Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Jun Mukai <mukai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630564}