Add OOP memory logging allocator shim

chrome/common/profiling/memlog_sender.h

Index: chrome/common/profiling/memlog_sender.h
diff --git a/chrome/common/profiling/memlog_sender.h b/chrome/common/profiling/memlog_sender.h
new file mode 100644
index 0000000000000000000000000000000000000000..cda630f3e480e448901768a24aacf82f8eb409ee
--- /dev/null
+++ b/chrome/common/profiling/memlog_sender.h
@@ -0,0 +1,20 @@
+// 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.
+
+#ifndef CHROME_COMMON_PROFILING_MEMLOG_SENDER_H_
+#define CHROME_COMMON_PROFILING_MEMLOG_SENDER_H_
+
+namespace base {
+
+class CommandLine;
+
+}  // namespace base
+
+namespace profiling {
+
+void InitMemlogSenderIfNecessary(const base::CommandLine& cmdline);
+
+}  // namespace profiling
+
+#endif  // CHROME_COMMON_PROFILING_MEMLOG_SENDER_H_