Adjust OTR guy up a bit to avoid the border, give him a shadow (for reals;...

Adjust OTR guy up a bit to avoid the border, give him a shadow (for reals; setShadow on NSView doesn't work if the view has no layer).

BUG=66757
TEST=OTR guy should not block divider line and should have a slight shadow around him

Review URL: http://codereview.chromium.org/5905001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@69319 0039d316-1c4b-4281-b951-d872f2087c98