[Media Router] Connection state change listening redesign part 2.

chrome/browser/media/android/router/media_router_android.cc

Index: chrome/browser/media/android/router/media_router_android.cc
diff --git a/chrome/browser/media/android/router/media_router_android.cc b/chrome/browser/media/android/router/media_router_android.cc
index 4b6e87058f402fc8c14b0d80dc61bf04f27d82f9..fe4c91245146cd72f0da660dbd50a1cf94a1cb08 100644
--- a/chrome/browser/media/android/router/media_router_android.cc
+++ b/chrome/browser/media/android/router/media_router_android.cc
@@ -312,16 +312,6 @@ void MediaRouterAndroid::UnregisterLocalMediaRoutesObserver(
   NOTIMPLEMENTED();
 }
 
-void MediaRouterAndroid::RegisterPresentationConnectionStateObserver(
-    PresentationConnectionStateObserver* observer) {
-  NOTIMPLEMENTED();
-}
-
-void MediaRouterAndroid::UnregisterPresentationConnectionStateObserver(
-    PresentationConnectionStateObserver* observer) {
-  NOTIMPLEMENTED();
-}
-
 void MediaRouterAndroid::OnSinksReceived(
     JNIEnv* env,
     jobject obj,