Bug 896415 - Remove mouse_event_shim.js from video app
Merge pull request #11268 from huchengtw-moz/video/Bug_896415_remove_mouse_event_shim

Bug 896415 - Remove mouse_event_shim.js from video app, r=djf
Bug 809093 - [UX VD] Settings. The list should have shorter horizontal dividers