My test in bug 1349005 reports resource://app/defaults/profile/prefs.js as unused, only on non-packaged builds. This file is http://searchfox.org/mozilla-central/source/browser/app/profile/prefs.js When writing prefs.js to disk, modules/libpref/Preferences.cpp creates this header automatically (see http://searchfox.org/mozilla-central/rev/7419b368156a6efa24777b21b0e5706be89a9c2f/modules/libpref/Preferences.cpp#107) I think this file can just be removed.
This appears to be a duplicate of bug 631271
Status: NEW → RESOLVED
Closed: 2 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 631271
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