[S.P.] Include selection rect in list marker cull rect when needed

TEST=fast/backgrounds/selection-background-color-of-image-list-style.html
TEST=fast/lists/markers-in-selection.html
BUG=496318

Review URL: https://codereview.chromium.org/1159033010

git-svn-id: svn://svn.chromium.org/blink/trunk@196565 bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed