Chrome allows users to view and delete Flash Player Local Shared Objects (LSOs) from the browser. Flash Player 10.3 is the only NPAPI plug-in that has implemented support for the NPAPI ClearSiteData API. You can delete Flash LSOs from within Chrome by clicking Wrench > Tools > Clear browsing data and selecting Delete cookies Chromes content settings to clear Plug-in data automatically whenever you close the browser. We hope other plug-ins will follow suit.”]
Source: https://blog.chromium.org/2011/04/providing-transparency-and-controls-for.html