Revert of [Presentation API] (5th) (1-UA) integrate controller and receiver side for 1-UA messaging

chrome/browser/media/router/browser_presentation_connection_proxy.h

-// 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_BROWSER_MEDIA_ROUTER_BROWSER_PRESENTATION_CONNECTION_PROXY_H_
-#define CHROME_BROWSER_MEDIA_ROUTER_BROWSER_PRESENTATION_CONNECTION_PROXY_H_
-
-#include "chrome/browser/media/router/media_route.h"
-#include "content/public/browser/presentation_service_delegate.h"
-#include "content/public/common/presentation_session.h"
-#include "mojo/public/cpp/bindings/binding.h"
-
-namespace media_router {
-
-class MediaRouter;
-
-// This class represents a browser side PresentationConnection. It connects with
-// PresentationConnection owned by a render frame to enable message exchange.
-// Message received on this class is further routed to Media Router. State of
-// browser side PresentationConnection is always 'connected'.
-//
-// |SetTargetConnection| sets |target_connection_| to mojo handle of
-// PresentationConnection object owned a render frame, and transits state of
-// |target_connection_| to 'connected'.
-//
-// Send message from render frame to media router:
-// PresentationConnection::sendString();
-//     -> PresentationDispatcher::DoSendMessage();
-//         -> PresentationConnectionProxy::SendSessionMessage();
-//             --> (mojo call to browser side PresentationConnection)
-//                 -> BrowserPresentationConnectionProxy::OnMessage();
-//                      -> MediaRouter::SendRouteMessage();
-//
-// Instance of this class is only created for remotely rendered presentations.
-// It is owned by PresentationFrame. When PresentationFrame gets destroyed or
-// |route_| is closed or terminated, instance of this class will be destroyed.
-
-class BrowserPresentationConnectionProxy
-    : public NON_EXPORTED_BASE(blink::mojom::PresentationConnection) {
- public:
-  using OnMessageCallback = base::Callback<void(bool)>;
-
-  // |router|: media router instance not owned by this class;
-  // |route_id|: underlying media route. |target_connection_ptr_| sends message
-  // to media route with |route_id|;
-  // |receiver_connection_request|: mojo interface request to be bind with this
-  // object;
-  // |controller_connection_ptr|: mojo interface ptr of controlling frame's
-  // connection proxy object.
-  BrowserPresentationConnectionProxy(
-      MediaRouter* router,
-      const MediaRoute::Id& route_id,
-      blink::mojom::PresentationConnectionRequest receiver_connection_request,
-      blink::mojom::PresentationConnectionPtr controller_connection_ptr);
-  ~BrowserPresentationConnectionProxy() override;
-
-  // blink::mojom::PresentationConnection implementation
-  void OnMessage(blink::mojom::ConnectionMessagePtr message,
-                 const OnMessageCallback& on_message_callback) override;
-
-  // Underlying media route is always connected. Media route class does not
-  // support state change.
-  void DidChangeState(content::PresentationConnectionState state) override {}
-
- private:
-  // |router_| not owned by this class.
-  MediaRouter* const router_;
-  const MediaRoute::Id route_id_;
-
-  mojo::Binding<blink::mojom::PresentationConnection> binding_;
-  blink::mojom::PresentationConnectionPtr target_connection_ptr_;
-};
-
-}  // namespace media_router
-
-#endif  // CHROME_BROWSER_MEDIA_ROUTER_BROWSER_PRESENTATION_CONNECTION_PROXY_H_