[tor-bugs] #18903 [Applications/Tor Browser]: Regression tests for canvas image extraction prompt

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#18903: Regression tests for canvas image extraction prompt
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     Reporter:  arthuredelstein      |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  Medium               |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  ff45-esr,
     Severity:  Normal               |  TorBrowserTeam201604R
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 It would be nice to have regression tests for our Canvas Image Extraction
 patch (#6253).

 mcs and brade developed some tests here:
 https://people.torproject.org/~brade/tests/canvasTest.html. Perhaps we
 could port these to a mochitest.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18903>
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