[tor-bugs] #21766 [Applications/Tor Browser]: Tor Browser based on ESR52 with e10s enabled crashed while trying to download a file

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#21766: Tor Browser based on ESR52 with e10s enabled crashed while trying to
download a file
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:  mcs
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Critical                             |     Resolution:
 Keywords:  ff52-esr, tbb-e10s, tbb-crash,       |  Actual Points:
  TorBrowserTeam201706, tbb-7.0-must             |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor4
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Comment (by mcs):

 We have not found a fix for the pdfjs download problem, but I think the
 reason our earlier fix is ineffective is because a blobURI is used for the
 download, and therefore the channel associated with the download cannot be
 suspended (suspend and resume are only implemented for some channel
 types). So in this case the suspend/resume solution won't work.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21766#comment:48>
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