Ensure IMS video calling is enabled before offering video upgrade

By not checking CallUtil.isVideoEnabled, we were offering upgrading even after the user had disabled it.

I also tried to make the isAvailable method a bit more readable.

PiperOrigin-RevId: 159966735
Change-Id: Ibf828a561654e0e9521a6d86ad18269da426bba4
1 file changed
tree: d9a66016b8eaaaa18275f8cc8fa14b03ae56dd09
  1. assets/
  2. java/
  3. Android.mk
  4. AndroidManifest.xml
  5. LICENSE