Connecting webrtc-internals WebUI frontend with the backend

content/browser/media/webrtc_internals_ui_observer.h

-// Copyright (c) 2013 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 CONTENT_BROWSER_MEDIA_WEBRTC_INTERNALS_UI_OBSERVER_H_
-#define CONTENT_BROWSER_MEDIA_WEBRTC_INTERNALS_UI_OBSERVER_H_
-
-namespace base {
-class Value;
-}  // namespace base
-
-namespace content {
-
-// Implement this interface to receive WebRTCInternals updates.
-class WebRTCInternalsUIObserver {
- public:
-  virtual ~WebRTCInternalsUIObserver() {}
-
-  // This is called on the browser IO thread.
-  virtual void OnUpdate(const std::string& command,
-                        const base::Value* args) = 0;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_MEDIA_WEBRTC_INTERNALS_UI_OBSERVER_H_