Use OnceCallback on Mojo interfaces in //chrome/common/media_router

chrome/common/media_router/mojo/media_router_struct_traits_unittest.cc

Index: chrome/common/media_router/mojo/media_router_struct_traits_unittest.cc
diff --git a/chrome/common/media_router/mojo/media_router_struct_traits_unittest.cc b/chrome/common/media_router/mojo/media_router_struct_traits_unittest.cc
index 676db6f54c56c60969a1d9e737f0b256c2b15cd5..232bb3c3171f8d99e87560ccfd12746749422d03 100644
--- a/chrome/common/media_router/mojo/media_router_struct_traits_unittest.cc
+++ b/chrome/common/media_router/mojo/media_router_struct_traits_unittest.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/common/media_router/mojo/media_router_struct_traits.h"
 
+#include <utility>
+
 #include "base/message_loop/message_loop.h"
 #include "chrome/common/media_router/discovery/media_sink_internal.h"
 #include "chrome/common/media_router/mojo/media_router.mojom.h"
@@ -27,8 +29,8 @@ class MediaRouterStructTraitsTest
  private:
   // MediaRouterTraitsTestService Impl
   void EchoMediaSink(const MediaSinkInternal& sink,
-                     const EchoMediaSinkCallback& callback) override {
-    callback.Run(sink);
+                     EchoMediaSinkCallback callback) override {
+    std::move(callback).Run(sink);
   }
 
   base::MessageLoop loop_;