ppapi: PPB_VpnProvider: Define API

native_client_sdk/src/libraries/ppapi/library.dsc

 {
   'TOOLS': ['win', 'linux', 'mac'],
   'SEARCH': [
       '.',
       '../../../../ppapi/c',
       '../../../../ppapi/c/dev',
       '../../../../ppapi/c/extensions/dev',
   ],
   'TARGETS': [
     {
@@ skipping 47 matching lines @@
         'ppb_url_request_info.h',
         'ppb_url_response_info.h',
         'ppb_var_array_buffer.h',
         'ppb_var_array.h',
         'ppb_var_dictionary.h',
         'ppb_var.h',
         'ppb_video_decoder.h',
         'ppb_video_encoder.h',
         'ppb_video_frame.h',
         'ppb_view.h',
+        'ppb_vpn_provider.h',
         'ppb_websocket.h',
         'pp_codecs.h',
         'pp_completion_callback.h',
         'pp_directory_entry.h',
         'pp_errors.h',
         'pp_file_info.h',
         'pp_graphics_3d.h',
         'pp_input_event.h',
         'pp_instance.h',
         'pp_macros.h',
@@ skipping 35 matching lines @@
         'pp_print_settings_dev.h',
         'ppp_text_input_dev.h',
       ],
       'DEST': 'include/ppapi/c/dev',
     },
   ],
   'DEST': 'src',
   'NAME': 'ppapi',
 }