Add pipe implementation for OOP memory logging

chrome/common/profiling/memlog_stream.cc

Index: chrome/common/profiling/memlog_stream.cc
diff --git a/chrome/common/profiling/memlog_stream.cc b/chrome/common/profiling/memlog_stream.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f6234f4a96cfcd9a8b02ae3c037e9da6da7f93b5
--- /dev/null
+++ b/chrome/common/profiling/memlog_stream.cc
@@ -0,0 +1,13 @@
+// Copyright 2017 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.
+
+#include "chrome/common/profiling/memlog_stream.h"
+
+namespace profiling {
+
+#if defined(OS_WIN)
+const wchar_t kWindowsPipePrefix[] = L"\\\\.\\pipe\\chrome_mem.";
+#endif  // OS_WIN
+
+}  // namespace profiling