[cmake] Inject CMAKE_OSX_SYSROOT into sub-CMake of googletest.
[cmake] Inject CMAKE_OSX_SYSROOT into sub-CMake of googletest.

root-mirror/root,karies/root,root-mirror/root,karies/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,karies/root,root-mirror/root,root-mirror/root,olifre/root,olifre/root,karies/root,olifre/root,olifre/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,olifre/root,karies/root,karies/root,root-mirror/root,root-mirror/root,olifre/root,olifre/root,karies/root,karies/root,olifre/root,karies/root,root-mirror/root,olifre/root