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This matches Chrome & WebView, which fixes websites that use cache storage. This cl is meant to be small and self-contained so that it can be merged safely. I'll work on making this more generic in a followup.

Bug: 1035420
Change-Id: I692f685569427e0d5277c97d5fca658cd2b56897
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1976550
Auto-Submit: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726454}