HostResolver is exposed to plugin.

ppapi/thunk/resource_creation_api.h

 // 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.
 
 #ifndef PPAPI_THUNK_RESOURCE_CREATION_API_H_
 #define PPAPI_THUNK_RESOURCE_CREATION_API_H_
 
 #include "ppapi/c/dev/ppb_audio_input_dev.h"
 #include "ppapi/c/dev/ppb_file_chooser_dev.h"
 #include "ppapi/c/dev/ppb_video_layer_dev.h"
@@ skipping 66 matching lines @@
   virtual PP_Resource CreateFlashNetConnector(PP_Instance instance) = 0;
   virtual PP_Resource CreateGraphics2D(PP_Instance instance,
                                        const PP_Size& size,
                                        PP_Bool is_always_opaque) = 0;
   virtual PP_Resource CreateGraphics3D(PP_Instance instance,
                                        PP_Resource share_context,
                                        const int32_t* attrib_list) = 0;
   virtual PP_Resource CreateGraphics3DRaw(PP_Instance instance,
                                           PP_Resource share_context,
                                           const int32_t* attrib_list) = 0;
+  virtual PP_Resource CreateHostResolverPrivate(PP_Instance instance) = 0;
   virtual PP_Resource CreateImageData(PP_Instance instance,
                                       PP_ImageDataFormat format,
                                       const PP_Size& size,
                                       PP_Bool init_to_zero) = 0;
   virtual PP_Resource CreateKeyboardInputEvent(
       PP_Instance instance,
       PP_InputEvent_Type type,
       PP_TimeTicks time_stamp,
       uint32_t modifiers,
       uint32_t key_code,
@@ skipping 42 matching lines @@
       const PP_FloatPoint* wheel_ticks,
       PP_Bool scroll_by_page) = 0;
 
   static const ApiID kApiID = API_ID_RESOURCE_CREATION;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_RESOURCE_CREATION_API_H_