Fix a crash related to PPAPI scripting.

ppapi/proxy/host_var_serialization_rules.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/proxy/host_var_serialization_rules.h"
 
-#include "base/logging.h"
-#include "ppapi/c/ppb_var.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
-#include "ppapi/shared_impl/var.h"
 #include "ppapi/shared_impl/var_tracker.h"
 
 using ppapi::PpapiGlobals;
-using ppapi::StringVar;
 using ppapi::VarTracker;
 
 namespace ppapi {
 namespace proxy {
 
-HostVarSerializationRules::HostVarSerializationRules(PP_Module pp_module)
-    : pp_module_(pp_module) {
+HostVarSerializationRules::HostVarSerializationRules() {
 }
 
 HostVarSerializationRules::~HostVarSerializationRules() {
 }
 
 PP_Var HostVarSerializationRules::SendCallerOwned(const PP_Var& var) {
   return var;
 }
 
-PP_Var HostVarSerializationRules::BeginReceiveCallerOwned(
-    const PP_Var& var,
-    Dispatcher* /* dispatcher */) {
+PP_Var HostVarSerializationRules::BeginReceiveCallerOwned(const PP_Var& var) {
   return var;
 }
 
 void HostVarSerializationRules::EndReceiveCallerOwned(const PP_Var& var) {
   if (var.type != PP_VARTYPE_OBJECT && var.type >= PP_VARTYPE_STRING) {
     // Release our reference to the local Var.
     PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var);
   }
 }
 
-PP_Var HostVarSerializationRules::ReceivePassRef(
-    const PP_Var& var,
-    Dispatcher* /* dispatcher */) {
+PP_Var HostVarSerializationRules::ReceivePassRef(const PP_Var& var) {
   // See PluginVarSerialization::BeginSendPassRef for an example.
   if (var.type == PP_VARTYPE_OBJECT)
     PpapiGlobals::Get()->GetVarTracker()->AddRefVar(var);
   return var;
 }
 
 PP_Var HostVarSerializationRules::BeginSendPassRef(const PP_Var& var) {
   return var;
 }
 
-void HostVarSerializationRules::EndSendPassRef(const PP_Var& /* var */,
-                                               Dispatcher* /* dispatcher */) {
+void HostVarSerializationRules::EndSendPassRef(const PP_Var& /* var */) {
   // See PluginVarSerialization::ReceivePassRef for an example. We don't need
   // to do anything here.
 }
 
 void HostVarSerializationRules::ReleaseObjectRef(const PP_Var& var) {
   PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(var);
 }
 
 }  // namespace proxy
 }  // namespace ppapi