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Unique tab identifier added to user agent string in Chrome for iOS?

When I tested my web application in Chrome for iOS (both iPhone and iPad), I noticed a strange identifier added to the user agent string, for example:

    alert(navigator.userAgent)

will create something like this (note the “3810AC74-327F-43D7-A905-597FF9FDFEAB” part at the end):

    Mozilla/5.0 (iPhone; CPU iPhone OS 5_1_1 like Mac OS X; en-us) AppleWebKit/534.46.0 (KHTML, like Gecko) CriOS/21.0.1180.77 Mobile/9B206 Safari/7534.48.3 (3810AC74-327F-43D7-A905-597FF9FDFEAB)

This identifier seems to be tab-specific and is retained even when going to another site.

My question is: if anyone knows about this and what can it be used for?

Update:

This GUID has been added to overcome the limitations of UIWebView . Claims to eric to indicate this in the comments.

+5

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