Refactor key preview code

This change removes mOldPreviewKeyIndex from KeyboardView.

Bug: 4298393
Change-Id: I832eb6deab7e078609973bf0b8be09f73db204d7
6 files changed
tree: 69ab2cbc8e2ddf3f706f23dd9a7322df8b40f276
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk