Add enum value for when an IOException is thrown during signature verification

Flag: com.android.net.ct.flags.certificate_transparency_service
Bug: 378626065
Test: builds
Change-Id: Ia61822244a3f55ea8b1007251066750b43aace1c
1 file changed
tree: bbe844a4fd328a86a268723d5a237ae9e4effe63
  1. stats/
  2. OWNERS