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This doesn't work on Python 3.4 on a Mac with Yosemite and Chrome installed:
import webbrowser
webbrowser.get("chrome")
This patch makes it work:
```
*** /usr/local/pythonz/pythons/CPython-3.4.1/lib/python3.4/webbrowser.py	2014年09月21日 16:37:46.000000000 -0400
--- /Users/ned/foo/webbrowser.py	2015年06月14日 17:31:28.000000000 -0400
***************
*** 605,614 ****
--- 605,615 ----
 # Don't clear _tryorder or _browsers since OS X can use above Unix support
 # (but we prefer using the OS X specific stuff)
 register("safari", None, MacOSXOSAScript('safari'), -1)
 register("firefox", None, MacOSXOSAScript('firefox'), -1)
+ register("chrome", None, MacOSXOSAScript('chrome'), -1)
 register("MacOSX", None, MacOSXOSAScript('default'), -1)
 # OK, now that we know what the default preference orders for each
 # platform are, allow user to override them with the BROWSER variable.
```