Release caps lock by double tap on shift key

This change is a back port from Master.
Cherry-pick: Ie0cad06c7b1afac0f33af76128303517e9e7bddc

Bug: 3319295
Change-Id: I4bc294161cb8bc4edfdcb1afc0c66b3812667bf3
2 files changed
tree: 14881c0ec3ce6a3511d801c7a9163a0aa9079f28
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk