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..da9c54fa7a3f0c07327c83b8ed29ada7badbfd93
--- /dev/null
+++ b/chrome/common/profiling/memlog_sender.h
@@ -0,0 +1,18 @@
+// 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 {
+

[awong, 2017/06/20 21:01:47]

newline inconsistency between here and the above namespace block.

[brettw, 2017/06/20 21:22:28]

I changed it, but I did it this way on purpose. It's pretty common to skip the
newlines around lists of simple forward declarations in namespaces.

+void InitMemlogSenderIfNecessary(const base::CommandLine& cmdline);
+
+}  // namespace profiling
+
+#endif  // CHROME_COMMON_PROFILING_MEMLOG_SENDER_H_