Firefox 46 附加组件兼容性

Firefox 46 will be released on April 19th. Here’s the list of changes that went into this version
that can affect add-on compatibility. There is more information
available in Firefox 46 for Developers, so you should also give it a look.

General

• <tabbrowser>’s mTabListeners and mTabFilters properties should be Maps rather than arrays. These are private properties, so they should be avoided in general. Note that they were also renamed to _tabListeners and _tabFilters.
• Hide window.showModalDialog, at least when e10s is enabled.
   In previous versions, using this API with e10s enabled would throw an
  exception. Now it isn’t present at all, so it plays better with feature
  detection.
• Remove legacy array/generator comprehension. Array comprehensions and generator comprehensions are non-standard. Comment 42 in the bug has some hints as to what to do instead.

Signing

• Firefox is currently enforcing add-on signing,
   with a preference to override it. Firefox 46 will remove the preference
   entirely , which means your add-on will need to be signed in order to
  run in release versions of Firefox. You can read about your options here.

New

• Add JavaScript module to check and request runtime permissions. This is for Firefox for Android. As documented,
   this API lets you query which permissions Firefox for Android has been
  granted (for example, camera access), or request them, in case you need
  to make use of any APIs that require those permissions.

http://blog.mozilla.org/addons/2016/02/23/compatibility-for-firefox-46/