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

base/win/eventlog_provider.cc

Index: base/win/eventlog_provider.cc
diff --git a/base/win/eventlog_provider.cc b/base/win/eventlog_provider.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d4116c265849f30df4aede7f86362696784d6930
--- /dev/null
+++ b/base/win/eventlog_provider.cc
@@ -0,0 +1,9 @@
+// Copyright 2016 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.
+
+// Force the generation of a .lib file for the .dll since Ninja expects shared
+// libraries to generate a .dll and a .lib file.
+__declspec(dllexport) bool fn() {
+  return true;
+}