[tor-bugs] #18632 [Tor Browser]: Rewritten Image Cache isolation patch for TBB/ESR45

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#18632: Rewritten Image Cache isolation patch for TBB/ESR45
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     Reporter:  arthuredelstein  |      Owner:  tbb-team
         Type:  defect           |     Status:  new
     Priority:  Medium           |  Milestone:
    Component:  Tor Browser      |    Version:
     Severity:  Normal           |   Keywords:
Actual Points:                   |  Parent ID:  #15197
       Points:                   |   Reviewer:
      Sponsor:                   |
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 We needed to re-write the Image Cache isolation patch, because the Mozilla
 introduced a CacheKey that changed how caching works. Fortunately it
 simplifies our patch somewhat.

 Here it is for review:
 https://github.com/arthuredelstein/tor-
 browser/commit/1d3f3223629bc37e584fe6592cef83ab01218fce

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18632>
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