Update visual cases (#3638)

yutannihilation · hadley · commit 9ec8feefa155 · 2019-11-24T12:12:09.000-06:00
diff --git a/tests/figs/guides/one-combined-colorbar-for-colour-and-fill-aesthetics.svg b/tests/figs/guides/one-combined-colorbar-for-colour-and-fill-aesthetics.svg
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diff --git a/tests/figs/guides/white-to-red-gradient-colorbar-thick-black-tick-marks-green-frame.svg b/tests/figs/guides/white-to-red-gradient-colorbar-thick-black-tick-marks-green-frame.svg
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diff --git a/tests/figs/guides/white-to-red-gradient-colorbar-white-tick-marks-no-frame.svg b/tests/figs/guides/white-to-red-gradient-colorbar-white-tick-marks-no-frame.svg
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