Add channel info to compressed formats in angle::Format Fixed: angleproject:8011 Change-Id: I2ea08f30523c08b7ca11ee327990a110a448ca42 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4232118 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Alexey Knyazev <lexa.knyazev@gmail.com>