[tor-bugs] #13512 [Tor Browser]: After update, load a static tab with change notes

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#13512: After update, load a static tab with change notes
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     Reporter:  arma     |      Owner:  mcs
         Type:           |     Status:  needs_review
  enhancement            |  Milestone:
     Priority:  normal   |    Version:
    Component:  Tor      |   Keywords:  tbb-usability,
  Browser                |  TorBrowserTeam201508R, GeorgKoppen201508R
   Resolution:           |  Parent ID:
Actual Points:           |
       Points:           |
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Comment (by gk):

 Testing this locally did not work but thanks to boklm I got it tested
 remotely. Sadly, no page was showing up, dunno why. Here are the steps to
 reproduce:

 1) Download Tor Browser 5.0a4 for Linux 64 bit (en-US)
 2) Modify `app.update.override.url` to point to https://test-
 data.tbb.torproject.org/13512/alpha/Linux_x86_64-gcc3/x/en-US
 3) Make sure you allow non-builtin certs
 4) Go to http://test-
 data.tbb.torproject.org/13512/alpha/Linux_x86_64-gcc3/x/en-US and make
 sure you import the correct cert; you can check there that the XML file
 has all the new attributes
 5) Click on the hamburger menu, question mark and "About Tor Browser" to
 get the update going
 6) The update succeeds but on restart no new tab is opening

 Note: I checked the updated code thereafter and nsBrowserContentHandler.js
 has all the Tor Browser bits of your patch, thus is got applied in the
 build.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13512#comment:29>
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