Read color space info from raw exif data

b/35516531

Change-Id: I86ad40b059f300375b0293bd96ecb967811f3a07
Reviewed-on: https://skia-review.googlesource.com/8951
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
3 files changed