Bug 976846 - Update active app earlier
Bug 977630 - [Single Variant] Builds Generation with Single Variant is not working
Merge pull request #16774 from dominickuo/revert-bug-938033

Revert "Bug 938033 - file is not recognized by video, but it can be played through transfered by bluetooth r=johnhu"
Merge pull request #16773 from yurenju/bug977630

Bug 977630 - [Single Variant] Builds Generation with Single Variant is not working r=@acperez
Merge pull request #16681 from alivedise/bugzilla/976846_master/update-active-app-early

Bug 976846 - Update active app earlier, r=timdream
Bug 958470 - [Ringtones] set ringer type and use web audio api to preview the ringtones