Normalize generated chrome icon weights and alignment, tune dark and
light chrome surface layering, and move the compact palette toward a
quieter neutral treatment. Keep the compact tab strip and toolbar
heights while making the toolbar, tab surfaces, omnibox, and navigation
cluster feel more balanced.
Use tonal dark-mode seams instead of bright separator lines, quiet the
resting omnibox border, and keep background tabs full-strength while
using shape and layering to distinguish the selected tab.
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