Reviewed by Jeremy Orlow.

        Update speech button image baselines for chromium port.
        https://bugs.webkit.org/show_bug.cgi?id=46457

        * platform/chromium-linux/fast/speech/input-appearance-numberandspeech-expected.checksum:
        * platform/chromium-linux/fast/speech/input-appearance-numberandspeech-expected.png:
        * platform/chromium-linux/fast/speech/input-appearance-searchandspeech-expected.checksum:
        * platform/chromium-linux/fast/speech/input-appearance-searchandspeech-expected.png:
        * platform/chromium-linux/fast/speech/input-appearance-speechbutton-expected.checksum:
        * platform/chromium-linux/fast/speech/input-appearance-speechbutton-expected.png:
        * platform/chromium-mac/fast/speech/input-appearance-numberandspeech-expected.checksum:
        * platform/chromium-mac/fast/speech/input-appearance-numberandspeech-expected.png:
        * platform/chromium-mac/fast/speech/input-appearance-searchandspeech-expected.checksum:
        * platform/chromium-mac/fast/speech/input-appearance-searchandspeech-expected.png:
        * platform/chromium-mac/fast/speech/input-appearance-speechbutton-expected.checksum:
        * platform/chromium-mac/fast/speech/input-appearance-speechbutton-expected.png:
        * platform/chromium-win/fast/speech/input-appearance-numberandspeech-expected.checksum:
        * platform/chromium-win/fast/speech/input-appearance-numberandspeech-expected.png:
        * platform/chromium-win/fast/speech/input-appearance-searchandspeech-expected.checksum:
        * platform/chromium-win/fast/speech/input-appearance-searchandspeech-expected.png:
        * platform/chromium-win/fast/speech/input-appearance-speechbutton-expected.checksum:
        * platform/chromium-win/fast/speech/input-appearance-speechbutton-expected.png:
        * platform/chromium/test_expectations.txt: Disables above tests, they will get enabled again after the chromium patch is submitted.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@68246 268f45cc-cd09-0410-ab3c-d52691b4dbfc