Bug 1107593 - Part 1: unit testing of the cover art in m4a files.
Bug 1107593 - Part 2: metadata field is 'picture' not 'image'. findMoovAtom() return a promise.
Bug 1090008 - [Text Selection]Refactor the TextDialog DOM event
Merge pull request #26211 from cctuan/1090008

Bug 1090008 - [Text Selection]Refactor the TextDialog DOM event
Merge pull request #26627 from hfiguiere/bug1107593-m4a-parsing-fixes

Bug 1107593 - m4a parsing fixes. r=squib
Bug 1097296 - [Window Management] Battery, Signal and time on the status bar will appear behind download update overlay