Revert of Make GrResourceCache dynamically change between LRU and random replacement...

Revert of Make GrResourceCache dynamically change between LRU and random replacement strategies. (patchset #8 id:140001 of https://codereview.chromium.org/2321563006/ )

Reason for revert:
Causing problems on Mac & Windows bots.

Original issue's description:
> Make GrResourceCache dynamically change between LRU and random replacement strategies.
>
> Random performs significantly better when each frame exceeds the budget by a small margin whereas LRU has worst case behavior.
>
> The decision of which to use is made based on the history from a few frames of the ratio of total unique key cache misses to unique key cache misses of resources purged in the last 2 frames.
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2321563006
>
> Committed: https://skia.googlesource.com/skia/+/0f147ac2ae575bbad3515a526f13700bc5c8e9d7

TBR=bsalomon@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/2386993004