Don't use libc++ for Windows. It doesn't exist.
Don't use libc++ for Windows. It doesn't exist.

Change-Id: I583496acb953473bd179ba41e7c04e615d10e18d

MonkeyZZZZ/platform_external_protobuf,MonkeyZZZZ/platform_external_protobuf,MonkeyZZZZ/platform_external_protobuf,MonkeyZZZZ/platform_external_protobuf,MonkeyZZZZ/platform_external_protobuf