Rebaseline some tests.

Rebaseline some tests.

LayoutTests/fast/repaint/list-marker.html
LayoutTests/css2.1/t1205-c561-list-displ-00-b.html
LayoutTests/css2.1/t1205-c565-list-pos-00-b.html
LayoutTests/css2.1/t1205-c566-list-stl-00-e-ag.html

They are marked as expected failures in
http://codereview.chromium.org/454017

The list-marker one is a bit trickier than others.
The position of texts after the list makers were wrong in expected image.
However, it seems italic-styled character 'p' is lacking with the current
test_shell and this is why it was marked as an expected failure.
As its dump render tree result is correct, I've just rebaselined the text
and added some comments on test_expectations.txt.

Note that the following upstream change will fix the rest tests.
https://bugs.webkit.org/show_bug.cgi?id=32014

BUG=28183
TEST=trybots

[hamaji, 2009-12-01 12:05:04]

Ukai-san, could you review this tomorrow if all bots become green?

[ukai, 2009-12-02 04:11:42]

LGTM