Right now, the log only shows why certain preview is shown, but does not give any info on which checks passed and failed during the decision making process. For example, when the decision was made to not show a preview because the network quality was unavailable, the log does not include the checked that passed leading up to that decision, such as that the hostost is NOT blacklisted, and the user is NOT blacklisted.
Details: https://docs.google.com/document/d/1i7_1VkjJ2x86BXWocK4ZuEVq_DzdYRslt2ihJ2UdlZk
Comment 1 by bugdroid1@chromium.org
, Dec 4 2017