Revert "Decode and encode ISO 21496-1 JPEG images"

This reverts commit 977a43773f7ce1c6e69cf966deb534311b3a18b4.

Reason for revert: Forgot to add SkGainmapInfo.cpp to Chrome build.

Original change's description:
> Decode and encode ISO 21496-1 JPEG images
>
> Add SkJpegMetadataDecoder::getISOGainmapMetadata, to extract the
> ISO 21496-1 metadata blob from a JPEG file.
>
> Update SkJpegMetadataDecoderImpl::findGainmapImage to search for
> ISO 21496-1 metadata in the base JPEG image.
>
> Update the extract_gainmap function to also search for
> ISO 21496-1 metadata. If that metadata is found, and if it indicates
> not to use the base image color space for applying the gainmap,
> then parse the gainmap image's ICC profile.
>
> Update lots of tests.
>
> Bug: b/338342146
> Change-Id: I998316b9242b5fc2fa59219855b73946582aa2ac
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/854696
> Reviewed-by: Brian Osman <brianosman@google.com>
> Reviewed-by: Christopher Cameron <ccameron@google.com>
> Commit-Queue: Christopher Cameron <ccameron@google.com>

Bug: b/338342146
Change-Id: Ib15641db520d675ed441b7272b64d62299f0104f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/855596
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Christopher Cameron <ccameron@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
11 files changed