Revert "SkImageEncoder::* going away"

Breaks 5 compiles on google3.

This reverts commit 3489b2b727bfb725d45208049e82309280b79ad8.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> SkImageEncoder::* going away
> 
> Approval from https://review.skia.org/5006
> TBR=reed@google.com
> 
> Change-Id: Ib5fb1b624594598e2316f9247069ecd207d7a974
> Reviewed-on: https://skia-review.googlesource.com/5751
> Reviewed-by: Hal Canary <halcanary@google.com>
> Commit-Queue: Hal Canary <halcanary@google.com>
> 

TBR=halcanary@google.com,reed@google.com,reviews@skia.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: I0c0b863056c90435374769e85fb08c1b2f5113a2
Reviewed-on: https://skia-review.googlesource.com/5760
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Herb Derby <herb@google.com>
5 files changed