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

--HG--
extra : rebase_source : 1b7f27076438d90024bf0ca7f9698a50efce1507
Bug 784739 - Switch from NULL to nullptr in gfx/2d/; r=Bas

--HG--
extra : rebase_source : 340bb0ff65c56c23bf2a4c8e24d082e938997831
Bug 784739 - Switch from NULL to nullptr in gfx/gl/; r=ehsan

--HG--
extra : rebase_source : 236322c2d0e4d5c8917d900f768852139b0abc80
Bug 784739 - Switch from NULL to nullptr in gfx/ipc/; r=ehsan

--HG--
extra : rebase_source : b589ee0a3207a6522a8f47a4edfa7ca9fc49469e
Bug 784739 - Switch from NULL to nullptr in gfx/layers/composite/; r=ehsan

--HG--
extra : rebase_source : c0f144ec277ed64f32c584f1be9e38bac3d1dde3
Bug 784739 - Switch from NULL to nullptr in gfx/layers/d3d10/; r=ehsan

--HG--
extra : rebase_source : 69b7ab7e4aa0eed92d597451bcab820f9d5c3957
Bug 784739 - Switch from NULL to nullptr in gfx/layers/d3d11/; r=ehsan

--HG--
extra : rebase_source : 9e5625a5318cfb79370c6e944bc9e651822ddd2c
Bug 784739 - Switch from NULL to nullptr in gfx/layers/d3d9/; r=ehsan

--HG--
extra : rebase_source : 6628eb59eef0bb828fbcff03ad967f7fc97c437d
Bug 784739 - Switch from NULL to nullptr in gfx/layers/ipc/; r=ehsan

--HG--
extra : rebase_source : 36cb1b9738de269a10cea871242b0b51588d0f3b
Bug 784739 - Switch from NULL to nullptr in gfx/layers/opengl/; r=joe

--HG--
extra : rebase_source : 65e2c8e72dc4b20ef9aa50688c9320792fca69ee
Bug 784739 - Switch from NULL to nullptr in gfx/layers/; r=ehsan

--HG--
extra : rebase_source : d6b0d229e1bdbe53c515b13c73c7b53839d9c756
Bug 784739 - Switch from NULL to nullptr in gfx/src/; r=ehsan

--HG--
extra : rebase_source : 28d7747c0a41a87ee064129b4f06ee23f1731c12