What is this number 1 on my Google Chrome icon (Mac)?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Darkness Approaches Looping

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Chapters
00:00 Question
01:01 Accepted answer (Score 31)
01:41 Answer 2 (Score 2)
02:42 Answer 3 (Score 1)
03:15 Thank you

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Full question
https://superuser.com/questions/1029127/...

Question links:
[image]: https://i.stack.imgur.com/tf8DR.png

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Tags
#googlechrome #icons #osxelcapitan

#avk47