We need to get the bigrams during the call to getSuggestions for
bug#6313806. We already give an int[] to getSuggestions and we
wanted to get rid of char[]'s anyway because it doesn't work with
surrogate pairs, so here we go.
Bug: 6313806
Change-Id: I56ce99f1db6b3302cdf42f0527343bded837091e
Split out getting the pointer to the bigrams to a separate
function. This is a preparative change to bug#6313806
Change-Id: Ieb2e306a1151cd95dc1a16793c8dc2f7fed8b654