Link to a Flash help center article from the "blocked flash" Page Action, to give users more context on what's happening, and actions they should/shouldn't take (i.e. downloading Flash won't help, despite what the content area is instructing you to do).

This will require a Flash help center with said instructions.

Background: https://groups.google.com/a/google.com/forum/#!topic/chrome-ui-review/2MphRPi5S2c