Remove RefPtr<ScriptState> from MediaSession

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

Index: third_party/WebKit/Source/modules/mediasession/NavigatorMediaSession.cpp
diff --git a/third_party/WebKit/Source/modules/mediasession/NavigatorMediaSession.cpp b/third_party/WebKit/Source/modules/mediasession/NavigatorMediaSession.cpp
index c172ff9352c1316bf42eeb89f414460e9d7a477b..2489112b0a6ba238bd0c5948f80a587314f92868 100644
--- a/third_party/WebKit/Source/modules/mediasession/NavigatorMediaSession.cpp
+++ b/third_party/WebKit/Source/modules/mediasession/NavigatorMediaSession.cpp
@@ -35,7 +35,7 @@ MediaSession* NavigatorMediaSession::mediaSession(ScriptState* scriptState,
                                                   Navigator& navigator) {
   NavigatorMediaSession& self = NavigatorMediaSession::from(navigator);
   if (!self.m_session)
-    self.m_session = MediaSession::create(scriptState);
+    self.m_session = MediaSession::create(scriptState->getExecutionContext());
   return self.m_session.get();
 }