HostResolver is exposed to plugin.

webkit/plugins/ppapi/mock_plugin_delegate.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 "webkit/plugins/ppapi/mock_plugin_delegate.h"
 
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/shared_impl/ppapi_preferences.h"
@@ skipping 296 matching lines @@
     int32_t backlog) {
 }
 
 void MockPluginDelegate::TCPServerSocketAccept(uint32 real_socket_id) {
 }
 
 void MockPluginDelegate::TCPServerSocketStopListening(uint32 real_socket_id,
                                                       uint32 temp_socket_id) {
 }
 
+void MockPluginDelegate::RegisterHostResolver(
+    ::ppapi::PPB_HostResolver_Shared* host_resolver,
+    uint32 host_resolver_id) {
+}
+
+void MockPluginDelegate::HostResolverResolve(
+    uint32 host_resolver_id,
+    const ::ppapi::HostPortPair& host_port,
+    const PP_HostResolver_Private_Hint* hint) {
+}
+
+void MockPluginDelegate::UnregisterHostResolver(uint32 host_resolver_id) {
+}
+
 bool MockPluginDelegate::AddNetworkListObserver(
     webkit_glue::NetworkListObserver* observer) {
   return false;
 }
 
 void MockPluginDelegate::RemoveNetworkListObserver(
     webkit_glue::NetworkListObserver* observer) {
 }
 
 int32_t MockPluginDelegate::ShowContextMenu(
@@ skipping 93 matching lines @@
   return -1;
 }
 
 webkit_glue::ClipboardClient*
 MockPluginDelegate::CreateClipboardClient() const {
   return NULL;
 }
 
 }  // namespace ppapi
 }  // namespace webkit