Fix inconsistent behavior with the back-to-the-main-keyboard key

With this patch, the back-to-the-main-keyboard in the Emoji
palette will be registered as a key-release action instead of
a key-press action, like switch-to-the-emoji-palette in the
main layout. This provides mroe consistent UX when the layout is
switched from the main layout to the Emoji palette then
switched back to the main layout.

BUG: 12464067
Change-Id: Ia0d0185db43234dfcfb7cee2677f3d199fe6ed96
5 files changed
tree: f9fcfc1c20a52c0eb2b937f70ddfd7b4f8187317
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk