[tor-bugs] #9172 [EFF-HTTPS Everywhere]: Temporarily turn off mixed content blocking, with prompt

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#9172: Temporarily turn off mixed content blocking, with prompt
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 Reporter:  micahlee              |          Owner:  lisayao
     Type:  defect                |         Status:  new    
 Priority:  normal                |      Milestone:         
Component:  EFF-HTTPS Everywhere  |        Version:         
 Keywords:                        |         Parent:         
   Points:                        |   Actualpoints:         
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 Firefox 23's release date is August 6, and it comes with a mixed content
 blocker. Unfortunately this will break a lot of websites for HTTPS
 Everywhere users, and we need a quick fix mitigation until the real bugs
 around this issue can be fixed.

 The quick fix is this. If Firefox is >= 23 and MCB is on, on HTTPS
 Everywhere upgrade prompt the user to turn it off temporarily.

 There are two components to this: the logic and the UI. There needs to be
 new about:config preferences, at least a flag for whether or not this
 prompt has been shown. For now the UI can be quick and sloppy. We'll work
 with EFF's graphics design to figure out the least intrusive way to
 display this prompt, along with all the other prompts, and not overwhelm
 the user.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9172>
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