[issue13620] Support Chrome in webbrowser.py

[Antoine Pitrou]

Changes by Antoine Pitrou <pitrou at free.fr>:


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keywords: +easy, needs review -patch
nosy: +georg.brandl
stage:  -> patch review
versions: +Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13620>
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