Reland:Adds eventlog provider dll to describe the message types of SYSLOG.

base/BUILD.gn

 # Copyright (c) 2013 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.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
@@ skipping 1203 matching lines @@
     ]
 
     sources -= [
       "message_loop/message_pump_libevent.cc",
       "strings/string16.cc",
     ]
 
     deps += [
       "//base/trace_event/etw_manifest:chrome_events_win",
       "//base/win:base_win_features",
+      "//base/win:eventlog_messages",
     ]
 
     if (is_component_build) {
       # Copy the VS runtime DLLs into the isolate so that they don't have to be
       # preinstalled on the target machine. The debug runtimes have a "d" at
       # the end.
       if (is_debug) {
         vcrt_suffix = "d"
       } else {
         vcrt_suffix = ""
@@ skipping 1252 matching lines @@
 }
 
 fuzzer_test("base_json_correctness_fuzzer") {
   sources = [
     "json/correctness_fuzzer.cc",
   ]
   deps = [
     ":base",
   ]
 }