Bug 950573 - Built-in Keyboard app could not input keys after it resumed
from OOM
  - Correct the keyboard app init flow, so that it would show the
    keyboard after input method engine has bee loaded
Merge pull request #14698 from RudyLu/keyboard/Bug950573-keyboard_app_init_flow

Bug 950573 - Built-in Keyboard app could not input keys after it resumed...
r=timdream, gary