Fix regression in toolbar and bubble border drawing in Incognito (Mac).
Fix regression in toolbar and bubble border drawing in Incognito (Mac).

Running with --incognito the toolbar border and some bubble borders
were red. This was a result of an error in a Material Design change.

BUG=597575

Review URL: https://codereview.chromium.org/1833903002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#383585}

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