Out of the box, we want Alt-Left to toggle Emojis, while Alt-Right
toggles the shifted symbols layout.
Bug: 23954008
Bug: 24369173
Change-Id: I93dd66fb469e5d0a831359ff3a786fe68e1d73ea
(cherry picked from commit 411841b374aa04e333ea5a438dfd539f49ec589a)
When the LatinIME does not have an active InputConnection, it will not try
to toggle the Emoji keyboard.
Bug 19513415.
Change-Id: I31f928cd7db1cddd771c548cd3dc42f8af64d0e2