plugin crashes when used on files accessed via gvfs SFTP

Hello,

This plugin seems to continue to work great with local files.

However, I use gedit heavily via the gvfs backend supported by Gnome to edit files over an SFTP connection. I've found that the version of the source code browser included with Trusty crashes when I try to edit one of those files with the following exception:

Gtk-Message: Failed to load module "overlay-scrollbar"
Traceback (most recent call last):
  File "/usr/lib/gedit/plugins/sourcecodebrowser/plugin.py", line 460, in on_tab_state_changed
    self._load_active_document_symbols()
  File "/usr/lib/gedit/plugins/sourcecodebrowser/plugin.py", line 416, in _load_active_document_symbols
    os.write(fd, contents)
TypeError: 'str' does not support the buffer interface

I am not sure if this is the 'correct' solution, but after googling I was able to make the plugin work by editing line 416 of /usr/lib/gedit/plugins/sourcecodebrowser/plugin.py to read

os.write(fd, bytes(contents, 'UTF-8'))

instead of

os.write(fd, contents, 'UTF-8')

Let me know if you need further information. Thanks.