1395214 - Move all devtools prefs to /devtools

Status: NEW

(DevTools :: General, enhancement, P5)

Description

[Alexandre Poirot [:ochameau]]

For now, we have various spots for devtools preferences:
http://searchfox.org/mozilla-central/source/devtools/client/preferences/devtools.js
http://searchfox.org/mozilla-central/source/devtools/client/preferences/debugger.js
http://searchfox.org/mozilla-central/source/devtools/shim/devtools-startup-prefs.js
And also:
http://searchfox.org/mozilla-central/source/modules/libpref/init/all.js#1034

all.js and devtools-startup-prefs.js look redundant?
all.js is mostly meant for preferences that have to be used in server/actors as the one from client/preferences aren't injected on fennec.

Ideally we would migrate all devtools preferences to /devtools,
is devtools-startup-prefs.js a good host?
Will it contain preferences that are specific to the frontend?