Remove RemoteAccessClientFirewallTraversal policy and code paths.

chrome/browser/remoting/firewall_traversal_observer.h

-// Copyright (c) 2011 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_BROWSER_REMOTING_FIREWALL_TRAVERSAL_OBSERVER_H_
-#define CHROME_BROWSER_REMOTING_FIREWALL_TRAVERSAL_OBSERVER_H_
-#pragma once
-
-#include "chrome/browser/prefs/pref_change_registrar.h"
-#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
-#include "content/public/browser/notification_observer.h"
-#include "ipc/ipc_channel.h"
-
-// Per-tab class to manage the firewall traversal policies for
-// the remoting plugin.
-// TODO(dmaclach): Replace this with a more generic mechanism for
-//                 plugins to access preferences. http://crbug.com/90543
-class FirewallTraversalObserver : public content::NotificationObserver,
-                                  public TabContentsObserver {
- public:
-  explicit FirewallTraversalObserver(TabContents* tab_contents);
-  virtual ~FirewallTraversalObserver();
-
-  static void RegisterUserPrefs(PrefService* prefs);
-
-  // content::NotificationObserver overrides:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
-  // IPC::Channel::Listener overrides:
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-
- private:
-  void UpdateFirewallTraversalState();
-
-  // Registers and unregisters us for notifications.
-  PrefChangeRegistrar pref_change_registrar_;
-
-  DISALLOW_COPY_AND_ASSIGN(FirewallTraversalObserver);
-};
-
-#endif  // CHROME_BROWSER_REMOTING_FIREWALL_TRAVERSAL_OBSERVER_H_