Add trace event Pepper API

ppapi/ppapi_shared.gypi

 # 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.
 
 {
   'variables': {
     'conditions': [
       ['inside_chromium_build==0', {
         'webkit_src_dir': '../../../..',
       },{
@@ skipping 198 matching lines @@
           'thunk/ppb_resource_array_thunk.cc',
           'thunk/ppb_scrollbar_api.h',
           'thunk/ppb_scrollbar_thunk.cc',
           'thunk/ppb_talk_private_api.h',
           'thunk/ppb_talk_private_thunk.cc',
           'thunk/ppb_tcp_server_socket_private_api.h',
           'thunk/ppb_tcp_server_socket_private_thunk.cc',
           'thunk/ppb_tcp_socket_private_api.h',
           'thunk/ppb_tcp_socket_private_thunk.cc',
           'thunk/ppb_text_input_thunk.cc',
+          'thunk/ppb_trace_event_thunk.cc',
           'thunk/ppb_udp_socket_private_api.h',
           'thunk/ppb_udp_socket_private_thunk.cc',
           'thunk/ppb_url_loader_api.h',
           'thunk/ppb_url_loader_thunk.cc',
           'thunk/ppb_url_request_info_api.h',
           'thunk/ppb_url_request_info_thunk.cc',
           'thunk/ppb_url_response_info_api.h',
           'thunk/ppb_url_response_info_thunk.cc',
           'thunk/ppb_url_util_thunk.cc',
           'thunk/ppb_video_capture_api.h',
@@ skipping 78 matching lines @@
               'thunk/ppb_tcp_socket_private_thunk.cc',
               'thunk/ppb_udp_socket_private_thunk.cc',
               'thunk/ppb_x509_certificate_private_thunk.cc',
             ],
           }],
         ],
       }],
     ],
   },
 }