[Media Router] Design MediaRouter interface with stub implementation.

chrome/browser/media/router/extension_media_route_provider_manager_host.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/extension_media_route_provider_manager_host.h"
+
+#include "base/guid.h"
+#include "chrome/browser/media/router/extension_mrpm_host_factory.h"
+#include "chrome/browser/media/router/media_router.h"
+#include "chrome/browser/media/router/media_source.h"
+#include "content/public/browser/browser_context.h"
+
+using content::BrowserContext;
+
+namespace media_router {
+
+ExtensionMediaRouteProviderManagerHost::ExtensionMediaRouteProviderManagerHost(
+    BrowserContext* context,
+    MediaRouteProviderManagerHost::Delegate* delegate)
+    : delegate_(delegate),
+      context_(context) {
+  DCHECK(context_);
+  DCHECK(delegate_);
+}
+
+ExtensionMediaRouteProviderManagerHost::
+~ExtensionMediaRouteProviderManagerHost() {
+}
+
+void ExtensionMediaRouteProviderManagerHost::AddMediaSinksQuery(
+    const MediaSource& source) {
+  NOTIMPLEMENTED();

[Kevin M, 2015/03/26 20:50:14]

Add landing TODO to help out our other reviewers

[imcheng, 2015/03/26 23:33:12]

Done.

+}
+
+void ExtensionMediaRouteProviderManagerHost::RemoveMediaSinksQuery(
+    const MediaSource& source) {
+  NOTIMPLEMENTED();
+}
+
+void ExtensionMediaRouteProviderManagerHost::RequestRoute(
+    const RouteRequestId& request_id,
+    const MediaSource& source,
+    const MediaSinkId& sink_id) {
+  NOTIMPLEMENTED();
+}
+
+void ExtensionMediaRouteProviderManagerHost::CloseRoute(
+    const MediaRouteId& route_id) {
+  NOTIMPLEMENTED();
+}
+
+void ExtensionMediaRouteProviderManagerHost::PostMessage(
+    const MediaRouteId& route_id,
+    const std::string& message,
+    const std::string& extra_info_json) {
+  NOTIMPLEMENTED();
+}
+
+void ExtensionMediaRouteProviderManagerHost::StartMediaRoutesQuery() {
+  NOTIMPLEMENTED();
+}
+
+void ExtensionMediaRouteProviderManagerHost::StopMediaRoutesQuery() {
+  NOTIMPLEMENTED();
+}
+
+}  // namespace media_router