GitLab

This reverts commit 71d64a4f.

Reason for revert: This seems to be causing attachment errors in gmail - I'm guessing that we still report these as files somehow?

Bug: 1033165

Original change's description:
> [IndexedDB] Remove child policy permissions for blobs from IndexedDB
> 
> Now that blobs from IndexedDB are backed & read by the IndexedDB system,
> they are no longer sent to the renderer as files. This means no content
> policy changes or grants are necessary.
> 
> Tracking document:
> https://docs.google.com/document/d/18suNOOzuEJbqgRJF0MB2VqdTyYqS4cvI2PGaCpyPXSw/edit?ts=5de6dc30&pli=1#heading=h.tw2iw2qfgduj
> 
> Bug: 1015212
> Change-Id: If3d2fd80b3254f19a56ab16ed7fc39cf5f0cf684
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1955813
> Reviewed-by: Ken Rockot <rockot@google.com>
> Reviewed-by: enne <enne@chromium.org>
> Commit-Queue: Daniel Murphy <dmurph@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#722617}

TBR=dmurph@chromium.org,rockot@google.com,enne@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1015212
Change-Id: If5307dfa39ab1a74e62dec21dd55dd71d81a52ff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1963206Reviewed-by: Daniel Murphy <dmurph@chromium.org>
Commit-Queue: Daniel Murphy <dmurph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#724039}