Suggest P3 for wide gamut images in SkAndroidCodec

This will prevent us from clipping the gamut
to sRGB.

BUG=skia:

Change-Id: Ifc34369d96aa9dd92ae2af72aac1cfa17fdc4b94
Reviewed-on: https://skia-review.googlesource.com/8025
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
2 files changed