Reland "[Chromecast] Use base::FeatureList to control features."

chromecast/browser/BUILD.gn

Index: chromecast/browser/BUILD.gn
diff --git a/chromecast/browser/BUILD.gn b/chromecast/browser/BUILD.gn
index 6b5f6605c03b2159e616ebf3b989894a1391d82f..5ae5acec086f794c43dd83b263708b4980fc5b07 100644
--- a/chromecast/browser/BUILD.gn
+++ b/chromecast/browser/BUILD.gn
@@ -246,6 +246,7 @@ source_set("browsertests") {
   sources = [
     "cast_media_blocker_browsertest.cc",
     "renderer_prelauncher_test.cc",
+    "test/cast_features_browsertest.cc",
     "test/cast_navigation_browsertest.cc",
   ]
 
@@ -254,8 +255,10 @@ source_set("browsertests") {
   deps = [
     ":test_support",
     "//chromecast:chromecast_features",
+    "//chromecast/base",
     "//chromecast/base:chromecast_switches",
     "//chromecast/base/metrics",
+    "//components/prefs",
     "//media/base:test_support",
   ]
 }