Update shift, next, and previous icon of LXX_Dark

java/res/drawable-hdpi/sym_keyboard_next_lxx_dark.png

java/res/drawable-hdpi/sym_keyboard_previous_lxx_dark.png

.../res/drawable-hdpi/sym_keyboard_shift_locked_lxx_dark.png

java/res/drawable-hdpi/sym_keyboard_shift_lxx_dark.png

java/res/drawable-mdpi/sym_keyboard_next_lxx_dark.png

java/res/drawable-mdpi/sym_keyboard_previous_lxx_dark.png

.../res/drawable-mdpi/sym_keyboard_shift_locked_lxx_dark.png

java/res/drawable-mdpi/sym_keyboard_shift_lxx_dark.png

java/res/drawable-xhdpi/sym_keyboard_next_lxx_dark.png

java/res/drawable-xhdpi/sym_keyboard_previous_lxx_dark.png

...res/drawable-xhdpi/sym_keyboard_shift_locked_lxx_dark.png

java/res/drawable-xhdpi/sym_keyboard_shift_lxx_dark.png

java/res/drawable-xxhdpi/sym_keyboard_next_lxx_dark.png

java/res/drawable-xxhdpi/sym_keyboard_previous_lxx_dark.png

...es/drawable-xxhdpi/sym_keyboard_shift_locked_lxx_dark.png

java/res/drawable-xxhdpi/sym_keyboard_shift_lxx_dark.png

java/res/values/keyboard-icons-lxx-dark.xml