Bug #12620: TorBrowser regression tests folder
Regression tests for #2875: Limit device and system specific CSS Media Queries.
Regression tests for #4902: Add DDG and StartPage to Omnibox.
Revert "Bug #4517: Emit observer event to filter the Drag+Drop url list"

This reverts commit 768f2c0dbad0dbf1947211804a6446fee2f20a55.
Revert "Bug #3688: Build determinism fix: Disable library timestamping."

This reverts commit 066d0c2aadb48eaafed7191975a07ea60258734c.
Revert "Bug #10159: Build determinism fixes"

This reverts commit 63d2ba95d629baee7e6846842e89f9810f4b8335.
Revert "Bug #10139: Make --enable-strip work again"

This reverts commit ef637032fbc5b5c37b5a5e62610d3fecfcb760ec.
Regression tests for #4755: Return client window coordinates for mouse event screenX/Y (for dragend, 0,0 is returned).

Note: So far, I was only able to get Firefox to generate fake
mouseup and mousedown events. Ideally, we should test all other
available mouse and touch events.
Regression tests for TB4: Tor Browser's Firefox preference overrides.

Note: many more functional tests could be made here
Regression tests for #2874: Block Components.interfaces from content
fixup! Bug #5856: (fix mistake in ESR31 port)
Regression tests for #5856: Do not expose physical screen info via window & window.screen.
fixup! Bug #2875 (clarify comment)