Rename key background drawables more consistent

This CL also deletes the following unused drawables.
- btn_keyboard_key_dark_normal_on.9.png
- btn_keyboard_key_dark_normal_off.9.png
- btn_keyboard_key_dark_pressed_off.9.png

Change-Id: I3e4e14fc1e631245ebb36a0a1c7ffc76f75fd217
96 files changed
tree: 10a7e0da38a400c1410b2e070825b11940d8e3c8
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk