Make tracing an embedded service

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 6419c2c6a8b7c690aca517c32dc6be2cd13f41c6..5865ed2adb80085e37454c2bdb307fdc1a50344d 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -4963,7 +4963,6 @@ if (is_chromeos && enable_package_mash_services) {
   catalog("mash_browser_tests_catalog") {
     testonly = true
     embedded_services = [ ":mash_browser_tests_manifest" ]
-    standalone_services = [ "//services/tracing:manifest" ]
     catalog_deps = [ "//chrome/app/mash:catalog" ]
   }
 
@@ -5000,7 +4999,6 @@ if (is_chromeos && enable_package_mash_services) {
   catalog("mus_browser_tests_catalog") {
     testonly = true
     embedded_services = [ ":mus_browser_tests_manifest" ]
-    standalone_services = [ "//services/tracing:manifest" ]
     catalog_deps = [ "//chrome/app/mash:catalog_mus" ]
   }