Jonas Jenwald 34184a89f9 Remove *unconditional* browser sniffing in web/grab_to_pan.js
According to https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/buttons#browser_compatibility, and manual testing in an up-to-date version of Google Chrome, the *unconditional* browser sniffing in `web/grab_to_pan.js` is no longer necessary.
In particular, this code is definitely not necessary in MOZCENTRAL-builds.
2021-03-25 16:08:16 +01:00
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2021-03-24 23:18:40 +09:00