normal 1x -> default_100_percent
normal 2x -> default_200_percent
touch 1x -> touch_100_percent
touch 2x -> touch_200_percent

I didn't move images used by windows installer/system and used by webui.

git cl upload failed to upload the change due to its side. comming without it.
(got ok from sky)

TBR=sky@chromium.org
BUG=123162
TEST=none

Review URL: https://chromiumcodereview.appspot.com/10383257

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@138026 0039d316-1c4b-4281-b951-d872f2087c98