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This patch implements the ability to load skia vector animation files
via the resource bundle. Each file is only loaded once and cached for
future use. ResourceBundle expects the animation file to be gzipped.

UMA metrics are also recorded to note the time to uncompress and parse
each animation file.

Bug: 890512
Change-Id: Ie0e17dbee9198b12a886f3739a034ad366bf9478
Component: ResourceBundle, skia vector animations
Reviewed-on: https://chromium-review.googlesource.com/c/1272800Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Malay Keshav <malaykeshav@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601385}