[tbb-bugs] #16577 [Tor Browser]: Verify that Tor Browser patch reverts cause test failures

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#16577: Verify that Tor Browser patch reverts cause test failures
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 Reporter:  arthuredelstein  |          Owner:  tbb-team
     Type:  defect           |         Status:  new
 Priority:  normal           |      Milestone:
Component:  Tor Browser      |        Version:
 Keywords:                   |  Actual Points:
Parent ID:                   |         Points:
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 We should verify that if we revert any of our Tor Browser patches that
 have a corresponding regression test, then the test will fail.

 Patches with regression tests:

 We have regression tests for the following patches:
 * Bug #5856: Do not expose physical screen info via window &
 window.screen.
 * Bug #2875: Limit device and system specific CSS Media Queries.
 * Bug #2950: Make Permissions Manager memory-only
 * Bug #4755: Return client window coordinates for mouse event screenX/Y
 (for dragend, 0,0 is returned).
 * Bug #2874: Block Components.interfaces from content

 Additionally the tests in
 * Bug #13749.1: regression tests for first party isolation of localStorage
 * Bug #13749.2: Regression tests for first-party isolation of cache
 cover patches
 * Bug #6564: Isolate DOM storage to first party URI.
 * Bug #6539: Isolate the Image Cache per url bar domain.
 * Bug #13742: Isolate cache to URL bar domain.
 * Bug #10819: Add a pref, "privacy.thirdparty.isolate", to allow the
 activation or deactivation of isolating DOM storage and image caching by
 first party URI.

 There are also a couple of regression test patches that I think may be
 broken:
 * TB4: Tor Browser's Firefox preference overrides.
 * Omnibox: Add DDG, Startpage, Disconnect, Youtube, Twitter; remove
 Amazon, eBay, bing

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16577>
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