Add events with custom timestamps and thread id to PPAPI dev tracing interface.

ppapi/ppapi_sources.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': {
     'c_source_files': [
       'c/pp_array_output.h',
       'c/pp_bool.h',
       'c/pp_completion_callback.h',
@@ skipping 444 matching lines @@
       'tests/test_printing.cc',
       'tests/test_printing.h',
       'tests/test_scrollbar.cc',
       'tests/test_scrollbar.h',
       'tests/test_tcp_server_socket_private.cc',
       'tests/test_tcp_server_socket_private.h',
       'tests/test_tcp_socket.cc',
       'tests/test_tcp_socket.h',
       'tests/test_tcp_socket_private.cc',
       'tests/test_tcp_socket_private.h',
+      'tests/test_trace_event.cc',
+      'tests/test_trace_event.h',
       'tests/test_truetype_font.cc',
       'tests/test_truetype_font.h',
       'tests/test_udp_socket.cc',
       'tests/test_udp_socket.h',
       'tests/test_udp_socket_private.cc',
       'tests/test_udp_socket_private.h',
       'tests/test_url_loader.cc',
       'tests/test_url_loader.h',
       'tests/test_url_request.cc',
       'tests/test_url_request.h',
@@ skipping 77 matching lines @@
       'tests/test_x509_certificate_private.h',
 
       # Deprecated test cases.
       'tests/test_instance_deprecated.cc',
       'tests/test_instance_deprecated.h',
       'tests/test_var_deprecated.cc',
       'tests/test_var_deprecated.h',
     ],
   },
 }