Revert "Split building encoding from decoding"

This reverts commit 94aaf7cdf57d7e3374a8b5bbd15aa9ae570cb5de.

Reason for revert: you know what I already typed the reason stop making rules that people have to follow, robots.

Original change's description:
> Split building encoding from decoding
> 
> Bug: skia:9756
> 
> In CanvasKit, a large part of the binary is for encoding. Clients
> would be happier with a smaller binary and no webp/jpeg encoding. Make
> this an option by splitting up the GN arguments.
> 
> Split SK_HAS_WEBP_LIBRARY into SK_CODEC_DECODES_WEBP (to match the
> existing SK_CODEC_DECODES_RAW) and SK_ENCODE_WEBP. Same for JPEG and
> PNG.
> 
> Update CanvasKit compile script to disable webp and jpeg encoding.
> Update debugger compile script to disable all encoding.
> 
> Change IsPng signature to match other SkCodecs.
> 
> Change-Id: Iec8466ee1b76bc3d1e377c24201068b776cd7718
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/273768
> Commit-Queue: Leon Scroggins <scroggo@google.com>
> Reviewed-by: Derek Sollenberger <djsollen@google.com>
> Reviewed-by: Kevin Lubick <kjlubick@google.com>
> Reviewed-by: Nathaniel Nifong <nifong@google.com>

TBR=djsollen@google.com,scroggo@google.com,kjlubick@google.com,nifong@google.com

Change-Id: I4fc2ea916743fda7e7d0d668b59e52052e880104
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:9756
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/275710
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
21 files changed