C2PA icons on web pages were not always being updated properly when the trustlist was updated in popup
Now a trustlist update sends a message to each tab. Each tab loads the trustlist from local storage and then checks every known media element against the new trust list.
Certchains no longer need to be messaged back to the background script.
Fixed issue where only the active tab would get updated. Now all tabs will get updated.
C2PA icons on web pages were not always being updated properly when the trustlist was updated in popup