Source release 15.2.0

cdm/src/properties_ce.cpp

@@ -86,6 +86,7 @@ void Properties::InitOnce() {
   oem_crypto_use_userspace_buffers_ = use_userspace_buffers_;
   provisioning_messages_are_binary_ = set_provisioning_messages_to_binary_;
   allow_service_certificate_requests_ = false;
+  device_files_is_a_real_filesystem_ = false;
   session_property_set_.reset(new CdmClientPropertySetMap());
 }