[tor-bugs] #5798 [Firefox Patch Issues]: Improve persistence and WebFont compatibility of font patch

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#5798: Improve persistence and WebFont compatibility of font patch
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 Reporter:  mikeperry             |          Owner:  mikeperry
     Type:  defect                |         Status:  new      
 Priority:  major                 |      Milestone:           
Component:  Firefox Patch Issues  |        Version:           
 Keywords:                        |         Parent:           
   Points:                        |   Actualpoints:           
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 Sid Stamm reviewed my font count limiting patch and suggested that the
 nsPrefShell is the wrong place to store font counts, since it may be
 cleared in circumstances such as refreshes/redirects. We probably want
 something that has a similar lifetime to cookies.. Perhaps the Content
 Prefs database?

 Additionally, we should be passing a bit down to prevent the font limits
 from applying to remotely-sourced WebFonts (from @font-face).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5798>
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