deviceScaleFactorChanged() handles style recalc.
deviceScaleFactorChanged() handles style recalc.

No need to do an additional frame tree walk for marking style dirty
right before.

Review URL: https://codereview.chromium.org/1773523003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#379764}

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