Revert "SkImageEncoder::* going away"

This reverts commit d7e16661bb36924b2c8f717c527b876dabb595f3.
Reason for revert: breaking g3
NOTRY=true
Change-Id: I56d53adca64a94b4f66dd0539634804a96e92ddf
Reviewed-on: https://skia-review.googlesource.com/5672
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Herb Derby <herb@google.com>
5 files changed