This change also modifies 9-patch drawables to fix the following
issues. In order to draw key background drawable just on the
coordinates we want, we have to know where an actual "visible" part is
in the drawable. The only clue we can use is "padding" of the
drawable. To achieve this, the 9-patch drawable must have its
"visible" part marked as "content". Please refer the Bug: 4948171 for
more detailed explanation.
This change also reverts the following "black" drawables back from
Gingerbread because recent change broke these (I70019a91).
* drawable-hdpi/sym_bkeyboard_*.png
* drawable-hdpi/btn_keyboard_key_*_stone.9.png
Bug: 4948171
Change-Id: I6e4d03b3144caa95c793aac97af22df34c5f454f
Cherrypick I44f3b2eef8086d6e0b0db53d38f08487549060c6 from Gingerbread
This change also introduces the key background drawables which has no
fixed bottom padding. Instead of relying on bottom padding in
drawable, this change also specifies Keyboard.verticalGap with
physical unit. Other keyboard related length, distance and size are
also specified by physical unit.
Bug: 3066107
Change-Id: Ib38355ebfc2f8d5b1d26c4e90eba87196fbeddfa
