Bug 985853 - [Keyboard UX update][User Story] Hold shift to enter upper ...

Fixed Bug 985853 - [Keyboard UX update][User Story] Hold shift to enter upper case characters
Also here, https://github.com/mozilla-b2g/gaia/pull/24467/files#diff-20c4b16ca8dc40195d5180f4bb1ceeceR65 after that patch has landed.