Mobile/Projects/Quickshare: Multiple quickshare buttons

Tracking

• bug 937828 - [meta] QuickShare improvements

Goals

Users often use more than one service for sharing different sorts of things through their browsers. To make this easier, we want to give them more than one quickshare button in their menu -- at least two, but maybe more if the UI allows (for example on phablets or tablets).

Use cases & user stories

• When I open my Firefox menu to share an item, I want two (or more) Quickshare buttons that let me quickly select one of my most used sharing services so I don't have to scroll through the longer list of available sharing services as often.
• When I open my Firefox menu to share an item, I want my Quickshare buttons to be automatically updated based on a frecency algorithm (rather than simply being populated based on frequency), so if I have used a new service fairly often recently, it will appear in a Quickshare button instead of a more-frequently-but-less-recently-used sharing service.
• When I long tap on a page and open a context menu, I want there to be two (or more) Quickshare buttons that let me quickly select one of my most used sharing services so I don't have to scroll through the longer list of available sharing services as often.

UX design

• see bugs

Quality criteria

• No user-perceptible performance degradation
• All goals are met
• All user stories are implemented & tested