Bug 941567 - [Keyboard][V1.2] The keyboard name of notification bar is i...

...ncorrect

     -- since keyboard show timing is depends on 'mozbrowserresize' event,
        so call 'showIMESwitcher' in the end of 'resizeKeyboard'
        to make sure refresh latest information at each time while keyboard layout is chnaged.
     -- ignore mozbrowserresize event while keyboard Frame is hidding.

(cherry picked from commit fc3ef53f0bbaf297e9177ece1d4390fd8788233b)