Media Remoting: Add mojo interfaces between browser and extension.

chrome/browser/media/router/mojo/media_router_mojo_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/mojo/media_router_mojo_impl.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 1003 matching lines @@
 }
 
 void MediaRouterMojoImpl::OnMediaControllerCreated(
     const MediaRoute::Id& route_id,
     bool success) {
   DVLOG_WITH_INSTANCE(1) << "OnMediaControllerCreated: " << route_id
                          << (success ? " was successful." : " failed.");
   MediaRouterMojoMetrics::RecordMediaRouteControllerCreationResult(success);
 }
 
+void MediaRouterMojoImpl::OnMediaRemoterCreated(
+    int32_t tab_id,
+    media::mojom::MirrorServiceRemoterPtr remoter,
+    media::mojom::MirrorServiceRemotingSourceRequest source_request) {
+  DVLOG_WITH_INSTANCE(1) << __func__ << ": tab_id = " << tab_id;
+
+  auto it = remoting_sources_.find(tab_id);
+  if (it == remoting_sources_.end()) {
+    LOG(WARNING) << __func__
+                 << ": No registered remoting source for tab_id = " << tab_id;
+    return;
+  }
+
+  CastRemotingConnector* connector = it->second;
+  connector->ConnectToService(std::move(source_request), std::move(remoter));
+}
+
 }  // namespace media_router