Remove custom left overs from object grouping

third_party/WebKit/Source/modules/mediasession/MediaSession.cpp

Index: third_party/WebKit/Source/modules/mediasession/MediaSession.cpp
diff --git a/third_party/WebKit/Source/modules/mediasession/MediaSession.cpp b/third_party/WebKit/Source/modules/mediasession/MediaSession.cpp
index d339ad466d67239d4424c77201d22e613735a603..901c0318d92d4db6aa7eb80e63e6b0a25df81e66 100644
--- a/third_party/WebKit/Source/modules/mediasession/MediaSession.cpp
+++ b/third_party/WebKit/Source/modules/mediasession/MediaSession.cpp
@@ -230,13 +230,6 @@ void MediaSession::DidReceiveAction(
   iter->value->call(this);
 }
 
-void MediaSession::setV8ReferencesForHandlers(
-    v8::Isolate* isolate,
-    const v8::Persistent<v8::Object>& wrapper) {
-  for (auto handler : m_actionHandlers.values())
-    handler->setWrapperReference(isolate, wrapper);
-}
-
 DEFINE_TRACE(MediaSession) {
   visitor->trace(m_metadata);
   visitor->trace(m_actionHandlers);