Cache three main keyboards to improve average switch time

This typically improves the average loading time by about
35%, after the first time.

Bug: 8689779
Change-Id: I7b0ab6b942af1d3250b9dcbf875f27f9f64692f3
1 file changed
tree: 5b839fd3cb3e604089b273e3c3f216928c1b0654
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk