Bug972573, The selection screen for adding a contact with multiple phone...

... numbers to a SMS message lacks a cancel, back, or 'x' button

Change from ValueSelector to ActionMenu

https://bugzilla.mozilla.org/show_bug.cgi?id=972573
I thought the current implementation is the way that is using the Building Blocks in "shared".
If my recognition is wrong, could you tell me the detail way how to use the the Building Blocks in "shared"?