The host sends simple log entries to the server.

remoting/host/plugin/host_script_object.h

Index: remoting/host/plugin/host_script_object.h
diff --git a/remoting/host/plugin/host_script_object.h b/remoting/host/plugin/host_script_object.h
index 3769cb9bb70b9fb822c197f2370aac6e1aeba4da..83ccbe014e543b51a6027df36b912d994a24e974 100644
--- a/remoting/host/plugin/host_script_object.h
+++ b/remoting/host/plugin/host_script_object.h
@@ -20,6 +20,7 @@
 #include "remoting/base/plugin_message_loop_proxy.h"
 #include "remoting/host/chromoting_host_context.h"
 #include "remoting/host/host_status_observer.h"
+#include "remoting/host/log_to_server.h"
 #include "remoting/host/plugin/host_plugin_utils.h"
 #include "remoting/host/ui_strings.h"
 #include "third_party/npapi/bindings/npapi.h"
@@ -177,6 +178,7 @@ class HostNPScriptObject : public HostStatusObserver {
   scoped_refptr<PluginMessageLoopProxy> plugin_message_loop_proxy_;
 
   scoped_ptr<RegisterSupportHostRequest> register_request_;
+  scoped_refptr<LogToServer> log_to_server_;
   scoped_refptr<MutableHostConfig> host_config_;
   ChromotingHostContext host_context_;
   scoped_ptr<DesktopEnvironment> desktop_environment_;