LibWeb: Propagate margin and offset when computing a box's baseline #649
+134
−80
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The addresses the issue #610
When traversing the layout tree to find an appropriate box child to derive the baseline from. Only the child's margin and offset was being applied. To fix this I sum each offset on the recursive call.
Because input elements use inlined flexbox, this breaks a lot of tests. Most of the time it just changes the baseline, but has no effect on the layout. Otherwise, I've checked each test and this now produces a more accurate result. For example, the label on file inputs are now vertically aligned with the text in the button.