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This is a reland of 404b7cc4

The original CL failed some tests because the code assumes that
platform-specific APIs called returned unique data. This was a false
assumption.

This reland follows another CL: https://crrev.com/c/2438875, which
ensures that fonts are not duplicated.

Original change's description:
> FontAccess: Sort fonts in lexicographical order
>
> This change ensures fonts are sorted before being cached. This change is
> due to a concern about fingerprinting:
> https://github.com/w3ctag/design-reviews/issues/399#issuecomment-530679815
>
> This change ensures that fonts are sorted in lexicographical order.
>
> Bug: 1043306
> Change-Id: Ia3acf2a45cb473124df4e489683bdc7bac15dde4
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2427040
> Commit-Queue: Olivier Yiptong <oyiptong@chromium.org>
> Reviewed-by: Joshua Bell <jsbell@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#810519}

Bug: 1043306
Change-Id: Ic3d70744661a838d82349c017a1cb0e8c23a3654
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2432815
Commit-Queue: Olivier Yiptong <oyiptong@chromium.org>
Reviewed-by: Joshua Bell <jsbell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812965}