Remove Media Router impl and BrowserContext factory.

chrome/browser/media/router/media_router_impl.h

-// Copyright 2015 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_MEDIA_ROUTER_MEDIA_ROUTER_IMPL_H_
-#define CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_IMPL_H_
-
-#include <map>
-#include <queue>
-#include <string>
-#include <vector>
-
-#include "base/callback.h"
-#include "base/containers/hash_tables.h"
-#include "base/gtest_prod_util.h"
-#include "base/macros.h"
-#include "base/memory/scoped_vector.h"
-#include "base/threading/thread_checker.h"
-#include "chrome/browser/media/router/media_router.h"
-#include "chrome/browser/media/router/media_sinks_observer.h"
-#include "components/keyed_service/core/keyed_service.h"
-
-namespace base {
-template <typename T>
-struct DefaultLazyInstanceTraits;
-}  // namespace base
-
-namespace media_router {
-
-class MediaRoute;
-class MediaRouterApiImpl;
-class MediaRoutesObserver;
-struct RoutesQueryResult;
-
-// Delegates calls to another implementation of MediaRouter, which in turn
-// handles communication with the Media Route Provider Manager (MRPM).
-// Instances of this class are created by MediaRouterImplFactory.
-// MediaRouterImpl is a profile-keyed service.
-// MediaRouterImpl runs on the browser UI thread. All observers/callbacks
-// registered to this class must also run in the UI thread.
-class MediaRouterImpl : public MediaRouter, public KeyedService {
- public:
-  ~MediaRouterImpl() override;
-
-  // |provider_manager_host_| must be null at the time this is called.
-  // |provider_manager_host| must not be null.
-  // Does not take ownership of |provider_manager_host_|.
-  // This function can only be called once.
-  void Initialize(MediaRouter* provider_manager_host);
-
-  // MediaRouter implementation.
-  void RequestRoute(const MediaSourceId& source,
-                    const MediaSinkId& sink_id,
-                    const MediaRouteResponseCallback& callback) override;
-  void CloseRoute(const MediaRouteId& route_id) override;
-  void PostMessage(const MediaRouteId& route_id,
-                   const std::string& message) override;
-
- private:
-  friend class MediaRouterImplFactory;
-
-  // Use MediaRouterImplFactory::GetForBrowserContext().
-  MediaRouterImpl();
-
-  // MediaRouter implementation.
-  bool RegisterMediaSinksObserver(MediaSinksObserver* observer) override;
-  void UnregisterMediaSinksObserver(MediaSinksObserver* observer) override;
-  bool RegisterMediaRoutesObserver(MediaRoutesObserver* observer) override;
-  void UnregisterMediaRoutesObserver(MediaRoutesObserver* observer) override;
-
-  // MRPM host to forward calls to MRPM to.
-  // This class does not own provider_manager_host_.
-  MediaRouter* provider_manager_host_;
-
-  DISALLOW_COPY_AND_ASSIGN(MediaRouterImpl);
-};
-
-}  // namespace media_router
-
-#endif  // CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_IMPL_H_