Bug 1027000 - Allow binary compatibility with libpixman versions between 0.19.2 and 0.25.2 when building against system libpixman. r=jrmuizel
Bug 1027440 - Build test plugins when building with --enable-default-toolkit=cairo-gtk3. r=mshal
Bug 1027448 - Fix building gfxSurfaceRefCountTest.cpp with system cairo. r=mshal