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

ppapi/cpp/dev/selection_dev.cc

 // Copyright (c) 2010 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/cpp/dev/selection_dev.h"
 
 #include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/instance_handle.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/var.h"
 
 namespace pp {
 
 namespace {
 
 static const char kPPPSelectionInterface[] = PPP_SELECTION_DEV_INTERFACE;
 
 PP_Var GetSelectedText(PP_Instance instance, PP_Bool html) {
   void* object =
       pp::Instance::GetPerInstanceObject(instance, kPPPSelectionInterface);
   if (!object)
     return Var().Detach();
   return static_cast<Selection_Dev*>(object)->
       GetSelectedText(PP_ToBool(html)).Detach();
 }
 
 const PPP_Selection_Dev ppp_selection = {
   &GetSelectedText
 };
 
 }  // namespace
 
-Selection_Dev::Selection_Dev(Instance* instance)
+Selection_Dev::Selection_Dev(const InstanceHandle& instance)
     : associated_instance_(instance) {
-  pp::Module::Get()->AddPluginInterface(kPPPSelectionInterface, &ppp_selection);
-  associated_instance_->AddPerInstanceObject(kPPPSelectionInterface, this);
+  Module::Get()->AddPluginInterface(kPPPSelectionInterface, &ppp_selection);
+  Instance::AddPerInstanceObject(instance, kPPPSelectionInterface, this);
 }
 
 Selection_Dev::~Selection_Dev() {
-  associated_instance_->RemovePerInstanceObject(kPPPSelectionInterface, this);
+  Instance::RemovePerInstanceObject(associated_instance_,
+                                    kPPPSelectionInterface, this);
 }
 
 }  // namespace pp