Remove custom left overs from object grouping

third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp

Index: third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp
diff --git a/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp b/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp
index 9872053f3470ebb8fe113d2c3a49e2707b65dc35..f16fb0eea9dbcc423b02d6c46bc693933f981984 100644
--- a/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp
+++ b/third_party/WebKit/Source/modules/remoteplayback/RemotePlayback.cpp
@@ -293,13 +293,6 @@ void RemotePlayback::remotePlaybackDisabled() {
     m_mediaElement->requestRemotePlaybackStop();
 }
 
-void RemotePlayback::setV8ReferencesForCallbacks(
-    v8::Isolate* isolate,
-    const v8::Persistent<v8::Object>& wrapper) {
-  for (auto callback : m_availabilityCallbacks.values())
-    callback->setWrapperReference(isolate, wrapper);
-}
-
 DEFINE_TRACE(RemotePlayback) {
   visitor->trace(m_availabilityCallbacks);
   visitor->trace(m_promptPromiseResolver);