[Chromecast] Hook up mojo media pipeline.

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index e22de2ac191c27f652fbb0f09dab2af7cd5aee61..95b28a8e2ea71dd1cac62058749844d3bb2e7f5f 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -957,11 +957,7 @@ source_set("browser") {
   }
 
   if (enable_mojo_media != "none") {
-    configs += [ "//media/mojo/services:enable_mojo_media_config" ]
-  }
-
-  if (enable_mojo_media == "utility") {
-    deps += [ "//media/mojo/services:application" ]
+    deps += [ "//media/mojo/services:default_application" ]
   }
 
   if (enable_wayland_server) {