Reorganize image files in ui/resources

Reorganize image files in ui/resources
normal 1x -> default_100_percent
normal 2x -> default_200_percent
touch 1x -> touch_100_percent
touch_2x -> touch_200_percent

I didn't move aura wall papers and a few resources used by webui and oak.png that are used for debugging.
They'll be handled separately.

TBR=sky@chromium.org
BUG=none
TEST=none

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=138022

[oshima, 2012-05-18 22:57:46]

can you proofread grd file?

[James Cook, 2012-05-21 05:19:50]

On 2012/05/19 03:17:45, oshima wrote:

Sorry I didn't get to this Friday.  I see you already committed it -- the grd
files LGTM.