Remove enable_media_router.

chrome/browser/android/chrome_jni_registrar.cc

Index: chrome/browser/android/chrome_jni_registrar.cc
diff --git a/chrome/browser/android/chrome_jni_registrar.cc b/chrome/browser/android/chrome_jni_registrar.cc
index 7f8b3509d62090d62d45e59d7dffaaa037d5e6fb..9017b02b21cfbcd6e453e0e6ef0e54bc2e5fa866 100644
--- a/chrome/browser/android/chrome_jni_registrar.cc
+++ b/chrome/browser/android/chrome_jni_registrar.cc
@@ -269,11 +269,9 @@ static base::android::RegistrationMethod kChromeRegisteredMethods[] = {
     {"ChromeFeatureList", chrome::android::RegisterChromeFeatureListJni},
     {"ChromeHttpAuthHandler",
      ChromeHttpAuthHandler::RegisterChromeHttpAuthHandler},
-#if defined(ENABLE_MEDIA_ROUTER)
     {"ChromeMediaRouter", media_router::MediaRouterAndroidBridge::Register},
     {"ChromeMediaRouterDialogController",
      media_router::MediaRouterDialogControllerAndroid::Register},
-#endif
     {"ChromePayments", payments::android::RegisterChromePayments},
     {"ChromeWebApkHost", ChromeWebApkHost::Register},
     {"CompositorView", RegisterCompositorView},