Show complete file path in window title

Background
Coming from Sublime, I find it helpful to see the full path (not only the file name) of the file currently being edited, in the window title of the IDE.

Motivation
When working in huge C++ projects with many levels of directories, like Chromium, many files have similar names. Having the current file's full path in the window title helps you understand which git submodule (or package) the file belongs to.

Deliverable
Show full file path by default ( /home/user/ replaced by ~/ ).
Later: a setting where users can customize the window title themselves?