Remove enable_media_router.

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index c8f6e62e7a16fc0a69daa2bc0fc7ed6c0aaa7e03..77bbf38b1a6a1ea5bd5851f0365edb10b85ca6a6 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -545,6 +545,14 @@ split_static_library("browser") {
     "manifest/manifest_icon_downloader.h",
     "manifest/manifest_icon_selector.cc",
     "manifest/manifest_icon_selector.h",
+    "media/cast_remoting_connector.cc",
+    "media/cast_remoting_connector.h",
+    "media/cast_remoting_connector_messaging.cc",
+    "media/cast_remoting_connector_messaging.h",
+    "media/cast_remoting_sender.cc",
+    "media/cast_remoting_sender.h",
+    "media/cast_transport_host_filter.cc",
+    "media/cast_transport_host_filter.h",
     "media/media_access_handler.h",
     "media/media_device_id_salt.cc",
     "media/media_device_id_salt.h",
@@ -1400,6 +1408,7 @@ split_static_library("browser") {
     "//chrome/app/theme:theme_resources",
     "//chrome/browser/budget_service:budget_proto",
     "//chrome/browser/devtools",
+    "//chrome/browser/media/router",
     "//chrome/browser/metrics/variations:chrome_ui_string_overrider_factory",
     "//chrome/browser/net:probe_message_proto",
     "//chrome/browser/ssl:proto",
@@ -1569,7 +1578,9 @@ split_static_library("browser") {
     "//ipc",
     "//media",
     "//media:media_features",
+    "//media/cast:net",
     "//media/midi",
+    "//media/mojo/interfaces:remoting",
     "//mojo/common",
     "//mojo/edk/system",
     "//mojo/public/cpp/bindings",
@@ -1885,12 +1896,6 @@ split_static_library("browser") {
       "sync_file_system/task_logger.cc",
       "sync_file_system/task_logger.h",
     ]
-    if (enable_media_router) {
-      sources += [
-        "media/cast_transport_host_filter.cc",
-        "media/cast_transport_host_filter.h",
-      ]
-    }
     public_deps += [ "//chrome/browser/extensions" ]
     allow_circular_includes_from += [ "//chrome/browser/extensions" ]
     deps += [
@@ -3902,22 +3907,6 @@ split_static_library("browser") {
     ]
   }
 
-  if (enable_media_router) {
-    deps += [
-      "//chrome/browser/media/router",
-      "//media/cast:net",
-      "//media/mojo/interfaces:remoting",
-    ]
-    sources += [
-      "media/cast_remoting_connector.cc",
-      "media/cast_remoting_connector.h",
-      "media/cast_remoting_connector_messaging.cc",
-      "media/cast_remoting_connector_messaging.h",
-      "media/cast_remoting_sender.cc",
-      "media/cast_remoting_sender.h",
-    ]
-  }
-
   if (enable_mojo_media) {
     configs += [ "//media/mojo/services:mojo_media_config" ]
     sources += [