HostResolver is exposed to plugin.

ppapi/thunk/ppb_host_resolver_private_thunk.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/c/private/ppb_host_resolver_private.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_host_resolver_private_api.h"
+#include "ppapi/thunk/resource_creation_api.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+typedef EnterResource<PPB_HostResolver_Private_API> EnterHostResolver;
+
+PP_Resource Create(PP_Instance instance) {
+  EnterFunction<ResourceCreationAPI> enter(instance, true);
+  if (enter.failed())
+    return 0;
+  return enter.functions()->CreateHostResolverPrivate(instance);
+}
+
+PP_Bool IsHostResolver(PP_Resource resource) {
+  EnterHostResolver enter(resource, false);
+  return PP_FromBool(enter.succeeded());
+}
+
+int32_t Resolve(PP_Resource host_resolver,
+                const char* host,
+                uint16_t port,
+                const PP_HostResolver_Private_Hint* hint,
+                PP_CompletionCallback callback) {
+  EnterHostResolver enter(host_resolver, callback, true);
+  if (enter.failed())
+    return enter.retval();
+  return enter.SetResult(enter.object()->Resolve(host, port, hint, callback));
+}
+
+uint32_t GetSize(PP_Resource host_resolver) {
+  EnterHostResolver enter(host_resolver, true);
+  if (enter.failed())
+    return 0;
+  return enter.object()->GetSize();
+}
+
+PP_Bool GetItem(PP_Resource host_resolver,
+                uint32_t index,
+                PP_Var* canonname,
+                PP_NetAddress_Private* addr) {
+  EnterHostResolver enter(host_resolver, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return PP_FromBool(enter.object()->GetItem(index, canonname, addr));
+}
+
+const PPB_HostResolver_Private g_ppb_host_resolver_thunk = {
+  &Create,
+  &IsHostResolver,
+  &Resolve,
+  &GetSize,
+  &GetItem
+};
+
+}  // namespace
+
+const PPB_HostResolver_Private_0_1* GetPPB_HostResolver_Private_0_1_Thunk() {
+  return &g_ppb_host_resolver_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi