[tor-bugs] #20264 [Applications/Tor Browser]: Reduce number of security slider states from 4 to 3 (proposed)

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#20264: Reduce number of security slider states from 4 to 3 (proposed)
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 Reporter:  arthuredelstein           |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  tbb-security-slider       |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by fem):

 I think it's a good idea as the only difference between Medium-Low and
 Medium-High is that Medium-Low disables some JS performance optimizations
 (ION JIT, Type Inference, ASM.JS) while Medium-High disables all js
 optimizations (..., Baseline JIT) in addition to all js on non-https sites
 by default and SVG OpenType font rendering.

 The differences with Low would then be that Medium makes html5 media
 click-to-play, disables MathML and blocking JAR files (which there's
 another ticket open discussing dropping the option from the slider,
 enabling it by default).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20264#comment:4>
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