Bug 784739 - Switch from NULL to nullptr in content/; r=ehsan

--HG--
extra : rebase_source : 9237726507e8002479616a98a82646a763932507
Bug 784739 - Switch from NULL to nullptr in dom/plugins/base/; r=ehsan

--HG--
extra : rebase_source : 827cf2bb75601a723a64593fca5c0cf6632c959c
Bug 784739 - Switch from NULL to nullptr in dom/plugins/ipc/; r=ehsan

--HG--
extra : rebase_source : e04ab81d4686a4ab487ba51cb6a221d862760792
Bug 784739 - Switch from NULL to nullptr in dom/plugins/test/; r=ehsan

--HG--
extra : rebase_source : a04ec13397fe58342509b49422a604f41be3de04
Bug 784739 - Switch from NULL to nullptr in js/; r=ehsan

--HG--
extra : rebase_source : 020a6cca9f0df429b630144366547b2da6cc7bb1
Bug 784739 - Switch from NULL to nullptr in miscellaneous directories; r=ehsan

--HG--
extra : rebase_source : 9335e9b4b0ac02e8066fbb79797bbc0d3fd73874
Bug 784739 - Switch from NULL to nullptr in modules/; r=ehsan

--HG--
extra : rebase_source : d82c3e2e18986d3b9ffc454ff84caf3634a6bbe7