Media Remoting: Add mojo interfaces between browser and extension.

chrome/browser/media/router/mojo/media_router_mojo_impl.cc

Index: chrome/browser/media/router/mojo/media_router_mojo_impl.cc
diff --git a/chrome/browser/media/router/mojo/media_router_mojo_impl.cc b/chrome/browser/media/router/mojo/media_router_mojo_impl.cc
index ec8e696fa07aae9209983e207d7ff18119f3d302..79b4910508bd11fe4f05788ce978b669bec0fd7a 100644
--- a/chrome/browser/media/router/mojo/media_router_mojo_impl.cc
+++ b/chrome/browser/media/router/mojo/media_router_mojo_impl.cc
@@ -30,6 +30,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "chrome/common/media_router/media_source_helper.h"
+#include "chrome/common/media_router/mojo/media_router.mojom.h"
 #include "chrome/common/media_router/route_message.h"
 #include "content/public/browser/browser_thread.h"
 #include "extensions/common/extension.h"
@@ -1021,4 +1022,21 @@ void MediaRouterMojoImpl::OnMediaControllerCreated(
   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