Media Remoting: Add mojo interfaces between browser and extension.

chrome/browser/media/router/media_router_base.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_base.h"
 
 #include "base/bind.h"
 #include "base/guid.h"
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
@@ skipping 137 matching lines @@
 
 void MediaRouterBase::Shutdown() {
   // The observer calls virtual methods on MediaRouter; it must be destroyed
   // outside of the dtor
   internal_routes_observer_.reset();
 }
 
 void MediaRouterBase::DetachRouteController(const MediaRoute::Id& route_id,
                                             MediaRouteController* controller) {}
 
+void MediaRouterBase::RegisterRemotingSource(
+    int32_t tab_id,
+    CastRemotingConnector* remoting_source) {
+  auto it = remoting_sources_.find(tab_id);
+  if (it != remoting_sources_.end()) {
+    DCHECK(remoting_source == it->second);
+    return;
+  }
+  remoting_sources_.emplace(tab_id, std::move(remoting_source));
+}
+
+void MediaRouterBase::UnregisterRemotingSource(int32_t tab_id) {
+  auto it = remoting_sources_.find(tab_id);
+  DCHECK(it != remoting_sources_.end());
+  remoting_sources_.erase(it);
+}
+
 }  // namespace media_router