This reverts commit 5fa11d4040.
Reason for revert: breaking some compiles..
https://chromium-swarm.appspot.com/task?id=4cb41acadb936310
Original change's description:
> Switch persistent cache to use SkReadBuffer/SkWriteBuffer
>
> These are much safer than SkReader32/SkWriter32 (they do validation and
> ensure we never read past the end of the buffer).
>
> Where we used to just assert that the contents of the cache were valid,
> we now validate everything, and fail gracefully by discarding the cache
> contents if it's corrupted or invalid.
>
> Bug: skia:9402
> Change-Id: Ib893681f97f9413c28744f11075dc2e392364db6
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/294998
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>
TBR=egdaniel@google.com,jvanverth@google.com,bsalomon@google.com,brianosman@google.com
Change-Id: Iabea26cde82043e3f3a23cde81503ea3abdd8398
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:9402
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/295394
Reviewed-by: Mike Reed <reed@google.com>
90e82904b5