[Media Router] Design MediaRouter interface with stub implementation.

chrome/browser/media/router/media_router_impl.cc

+// 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.
+
+#include "chrome/browser/media/router/media_router_impl.h"
+
+#include <set>
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "base/stl_util.h"
+#include "chrome/browser/media/router/media_route.h"
+#include "chrome/browser/media/router/media_routes_observer.h"
+#include "chrome/browser/media/router/media_sink.h"
+#include "chrome/browser/media/router/media_sinks_observer.h"
+#include "chrome/browser/media/router/media_source.h"
+#include "chrome/browser/media/router/media_source_helper.h"
+
+namespace media_router {
+
+MediaRouterImpl::MediaRouterImpl() : mrpm_host_(nullptr) {}
+
+MediaRouterImpl::~MediaRouterImpl() {}
+
+void MediaRouterImpl::Initialize(MediaRouteProviderManagerHost* mrpm_host) {
+  DCHECK(!mrpm_host_);
+  DCHECK(mrpm_host);
+  mrpm_host_ = mrpm_host;
+}
+
+// TODO(imcheng): Implement NOTIMPLEMENTED() methods.
+bool MediaRouterImpl::RegisterObserver(
+    MediaSinksObserver* observer) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+void MediaRouterImpl::UnregisterObserver(MediaSinksObserver* observer) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::PostMessage(
+    const MediaRouteId& route_id,
+    const std::string& message) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::OnMessage(const MediaRouteId& route_id,
+                                const std::string& message) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::OnSinksReceived(
+    const MediaSource& source,
+    const std::vector<MediaSink>& sinks) {
+  NOTIMPLEMENTED();
+}
+
+RouteRequestId MediaRouterImpl::StartRouteRequest(
+    const MediaSource& source,
+    const MediaSinkId& sink_id,
+    const MediaRouteResponseCallback& callback) {
+  NOTIMPLEMENTED();
+  return kInvalidRouteRequestId;
+}
+
+void MediaRouterImpl::CloseRoute(const MediaRouteId& route_id) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::UnregisterMediaRouteResponseCallback(
+    const RouteRequestId& request_id) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::RegisterMediaRoutesObserver(
+    MediaRoutesObserver* observer) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::UnregisterMediaRoutesObserver(
+    MediaRoutesObserver* observer) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::OnRouteResponseReceived(
+    const RouteRequestId& request_id,
+    const MediaRoute& route) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::OnRouteResponseError(const RouteRequestId& request_id,
+                                           const std::string& error_text) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::OnRoutesUpdated(
+    const std::vector<MediaRoute>& routes,
+    const std::vector<MediaSink>& sinks) {
+  NOTIMPLEMENTED();
+}
+
+void MediaRouterImpl::OnHostDestroyed(MediaRouteProviderManagerHost* host) {
+  DCHECK(host == mrpm_host_);
+  mrpm_host_ = nullptr;
+}
+
+}  // namespace media_router