Remove implicit scoped_refptr operator T*

ppapi/proxy/plugin_var_tracker.cc

Index: ppapi/proxy/plugin_var_tracker.cc
diff --git a/ppapi/proxy/plugin_var_tracker.cc b/ppapi/proxy/plugin_var_tracker.cc
index 384eb3ec7b2165445c46daccba93c0fa731fe2d8..ed27c238f5a256440221a08c585880d434dfa179 100644
--- a/ppapi/proxy/plugin_var_tracker.cc
+++ b/ppapi/proxy/plugin_var_tracker.cc
@@ -56,7 +56,7 @@ PP_Var PluginVarTracker::ReceiveObjectPassRef(const PP_Var& host_var,
     // two references on our behalf. We want to transfer that extra reference
     // to our list. This means we addref in the plugin, and release the extra
     // one in the renderer.
-    SendReleaseObjectMsg(*object);
+    SendReleaseObjectMsg(*object.get());
   }
   info.ref_count++;
   return ret;