Unreviewed Chromium rebaseline and text expectation update.

        * platform/chromium-linux/fast/repaint/select-option-background-color-expected.checksum: Added.
        * platform/chromium-linux/fast/repaint/select-option-background-color-expected.png: Added.
        * platform/chromium-linux/fast/repaint/select-option-background-color-expected.txt: Added.
        * platform/chromium/test_expectations.txt:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@76838 268f45cc-cd09-0410-ab3c-d52691b4dbfc