Make a global enum to differentiate impl & proxy.

ppapi/shared_impl/private/tcp_socket_private_impl.cc

Index: ppapi/shared_impl/private/tcp_socket_private_impl.cc
diff --git a/ppapi/shared_impl/private/tcp_socket_private_impl.cc b/ppapi/shared_impl/private/tcp_socket_private_impl.cc
index a26880127f364e1a96cc71300ddf62e5608a6887..1db94e6b5434f91be8c355fb70ed0f7b90da32e5 100644
--- a/ppapi/shared_impl/private/tcp_socket_private_impl.cc
+++ b/ppapi/shared_impl/private/tcp_socket_private_impl.cc
@@ -22,13 +22,13 @@ const int32_t TCPSocketPrivateImpl::kMaxWriteSize = 1024 * 1024;
 
 TCPSocketPrivateImpl::TCPSocketPrivateImpl(PP_Instance instance,
                                            uint32 socket_id)
-    : Resource(instance) {
+    : Resource(OBJECT_IS_IMPL, instance) {
   Init(socket_id);
 }
 
 TCPSocketPrivateImpl::TCPSocketPrivateImpl(const HostResource& resource,
                                            uint32 socket_id)
-    : Resource(resource) {
+    : Resource(OBJECT_IS_PROXY, resource) {
   Init(socket_id);
 }