Convert resources to take an instance key instead of an Instance*.

ppapi/cpp/module.cc

 // Copyright (c) 2011 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.
 
 // Note that the single accessor, Module::Get(), is not actually implemented
 // in this file.  This is an intentional hook that allows users of ppapi's
 // C++ wrapper objects to provide difference semantics for how the singleton
 // object is accessed.
 //
 // In general, users of ppapi will also link in ppp_entrypoints.cc, which
@@ skipping 120 matching lines @@
 
 // PPP_Messaging implementation ------------------------------------------------
 
 void Messaging_HandleMessage(PP_Instance pp_instance, PP_Var var) {
   Module* module_singleton = Module::Get();
   if (!module_singleton)
     return;
   Instance* instance = module_singleton->InstanceForPPInstance(pp_instance);
   if (!instance)
     return;
-  instance->HandleMessage(Var(Var::PassRef(), var));
+  instance->HandleMessage(Var(PASS_REF, var));
 }
 
 static PPP_Messaging instance_messaging_interface = {
   &Messaging_HandleMessage
 };
 
 // Module ----------------------------------------------------------------------
 
 Module::Module() : pp_module_(0), get_browser_interface_(NULL), core_(NULL) {
 }
@@ skipping 58 matching lines @@
   const PPB_Core* core = reinterpret_cast<const PPB_Core*>(GetBrowserInterface(
       PPB_CORE_INTERFACE));
   if (!core)
     return false;
   core_ = new Core(core);
 
   return Init();
 }
 
 }  // namespace pp