Adding key press detection in the browser process.

media/base/user_input_monitor_mac.mm

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.

[Sergey Ulanov, 2013/08/08 01:25:48]

nit: Lawyercat says you don't need (c).
http://www.chromium.org/developers/coding-style

Same with other files.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "media/base/user_input_monitor.h"
+
+namespace media {
+
+scoped_ptr<UserInputMonitor> UserInputMonitor::Create(
+    const scoped_refptr<base::SingleThreadTaskRunner>& input_task_runner,
+    const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner,
+    const scoped_refptr<base::SingleThreadTaskRunner>& observer_task_runner,
+    uint8 input_event_mask,
+    const base::WeakPtr<UserInputObserver>& observer) {
+  return scoped_ptr<UserInputMonitor>(NULL);

[Sergey Ulanov, 2013/08/08 01:25:48]

nit: remove NULL.
nit: add TODO to implement this?

+}
+
+}  // namespace media