Revert of Create a hash table from id<-->key in SkImageFilter::CacheImpl (patchset #7 id:120001 of https://codereview.chromium.org/1514893003/ )

Reason for revert:
speculative revert to try to unblock DEPS roll

https://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_asan_rel_ng/builds/94665

Original issue's description:
> Create a hash table from id<-->key in SkImageFilter::CacheImpl
>
> There is memory leak in the SkImageFilter::Cache. There are two sources
> of memory leak:
> 1. The cache filling up quickly.
> 2. A slow small leak that never stops.
> This CL solves the first issue, which prevents the cache filling up quickly.
> This CL creates a new hash table that index the
> SkImageFilter::uniqueID to an array of keys, and with the existing
> key<-->Value hash table, we can have SkImageFilters proactively
> purge content derived cached content when destroyed.
>
> BUG=489543
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1514893003
>
> Committed: https://skia.googlesource.com/skia/+/f5d1f8dcc841516d7ea63c151b13059af40ca76d

TBR=mtklein@google.com,junov@chromium.org,xidachen@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=489543

Review URL: https://codereview.chromium.org/1537923002

0 files changed, 0 insertions, 0 deletions