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

ppapi/cpp/private/udp_socket_private.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.
 
 #include "ppapi/cpp/private/udp_socket_private.h"
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/cpp/completion_callback.h"
-#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/instance_handle.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/module_impl.h"
 
 namespace pp {
 
 namespace {
 
 template <> const char* interface_name<PPB_UDPSocket_Private>() {
   return PPB_UDPSOCKET_PRIVATE_INTERFACE;
 }
 
 }  // namespace
 
-UDPSocketPrivate::UDPSocketPrivate(Instance* instance) {
-  if (has_interface<PPB_UDPSocket_Private>() && instance) {
+UDPSocketPrivate::UDPSocketPrivate(const InstanceHandle& instance) {
+  if (has_interface<PPB_UDPSocket_Private>()) {
     PassRefFromConstructor(get_interface<PPB_UDPSocket_Private>()->Create(
-                               instance->pp_instance()));
+                               instance.pp_instance()));
   }
 }
 
 int32_t UDPSocketPrivate::Bind(const PP_NetAddress_Private* addr,
                                const CompletionCallback& callback) {
   if (!has_interface<PPB_UDPSocket_Private>())
     return PP_ERROR_NOINTERFACE;
   return get_interface<PPB_UDPSocket_Private>()->Bind(
       pp_resource(), addr, callback.pp_completion_callback());
 }
@@ skipping 22 matching lines @@
                                  const CompletionCallback& callback) {
   if (!has_interface<PPB_UDPSocket_Private>())
     return PP_ERROR_NOINTERFACE;
   return get_interface<PPB_UDPSocket_Private>()->SendTo(
       pp_resource(), buffer, num_bytes, addr,
       callback.pp_completion_callback());
 }
 
 }  // namespace pp