Re-factor BasePreferences
to essentially be a wrapper around AppOptions
#18413
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In the MOZCENTRAL build the
BasePreferences
class is almost unused, since it's only being used to initialize and update theAppOptions
which means that theoretically we could move the relevant code there.However for the other build targets (e.g. GENERIC and CHROME) we still need to keep the
BasePreferences
class, although we can re-factor things to move the necessary validation inside ofAppOptions
and thus simplify the code and reduce duplication.The patch also moves the event dispatching, for changed preference values, into
AppOptions
instead.