Deallocate gesture trail bitmap when unneeded further

Follow up to I5bc980c4dc41bc304be3c190934c1f7c55c9d244

bug: 8967766
Change-Id: I7b916daa5269cfde359a77555e8ffadf0e4a8f92
3 files changed
tree: 1abf4aa876074ee6c9bc25daf65fdc9f159239cd
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk