Revert of Reland "media: Refactor MojoMediaClient" with fix.

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index b6d2903fb39d0ea8fefcebf142be2ef98c0291f7..cd5004bb64af3c7c16219cd5248dfd944e8dbf80 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -958,10 +958,8 @@ source_set("browser") {
     deps += [ "//chrome/browser/media/router" ]
   }
 
-  if (enable_mojo_media == "browser") {
-    deps += [ "//media/mojo/services:application" ]
-  } else if (enable_mojo_media != "none") {
-    configs += [ "//media/mojo/services:enable_mojo_media_config" ]
+  if (enable_mojo_media != "none") {
+    deps += [ "//media/mojo/services:default_application" ]
   }
 
   if (enable_wayland_server) {