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Jim Blandy authored
`DisplayListBuilder::PushRoundedRect`, used for unordered list bullets and the like, draws rounded rectangles as ordinary rectangles with rounded borders that have a radius of half the rectangle. Unfortunately, this leads to tiny white dots at the center of the bullet under some magnifications. I haven't diagnosed why - perhaps there's something somewhere that snaps borders outward. Increasing the thickness of the borders to (an impossible) 60% of the width of the rectangle makes the problem go away. If this kludge doesn't work, we could add a rectangle covering the center. Differential Revision: https://phabricator.services.mozilla.com/D100753
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