[PPAPI] ResourceVar now reference counts its PP_Resource in the plugin.

content/renderer/pepper/host_resource_var.cc

+// Copyright 2013 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 "content/renderer/pepper/host_resource_var.h"
+
+namespace content {
+
+HostResourceVar::HostResourceVar() : pp_resource_(0) {}
+
+HostResourceVar::HostResourceVar(PP_Resource pp_resource)
+    : pp_resource_(pp_resource) {}
+
+HostResourceVar::HostResourceVar(const IPC::Message& creation_message)
+    : pp_resource_(0),
+      creation_message_(new IPC::Message(creation_message)) {}
+
+PP_Resource HostResourceVar::GetPPResource() const {
+  return pp_resource_;
+}
+
+const IPC::Message* HostResourceVar::GetCreationMessage() const {
+  return creation_message_.get();
+}
+
+bool HostResourceVar::IsPending() const {
+  return pp_resource_ == 0 && creation_message_;
+}
+
+HostResourceVar::~HostResourceVar() {}
+
+}  // namespace content