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 8593de042aa64fb3772971ac45a85bf302b1b20b..7eb6e439c22e05136d88d0ce3dd2804848ba21c2 100644
--- a/chrome/browser/android/chrome_jni_registrar.cc
+++ b/chrome/browser/android/chrome_jni_registrar.cc
@@ -261,11 +261,9 @@ static base::android::RegistrationMethod kChromeRegisteredMethods[] = {
     {"ChromeFeatureList", chrome::android::RegisterChromeFeatureListJni},
     {"ChromeHttpAuthHandler",
      ChromeHttpAuthHandler::RegisterChromeHttpAuthHandler},
-#if defined(ENABLE_MEDIA_ROUTER)
     {"ChromeMediaRouter", media_router::MediaRouterAndroid::Register},
     {"ChromeMediaRouterDialogController",
      media_router::MediaRouterDialogControllerAndroid::Register},
-#endif
     {"ChromeWebApkHost", ChromeWebApkHost::Register},
     {"CompositorView", RegisterCompositorView},
     {"ConnectionInfoPopupAndroid",