/usr/share/dbus-1/interfaces/com.canonical.URLDispatcher.xml is in url-dispatcher 0.1+14.04.20140403-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | <?xml version="1.0" encoding="UTF-8"?>
<node>
<interface name="com.canonical.URLDispatcher">
<method name="DispatchURL">
<arg type="s" name="url" direction="in" />
</method>
</interface>
</node>
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