[Blink, RemotePlayback] watchAvailability() implementation.

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/remoteplayback/HTMLMediaElementRemotePlayback.h"
 
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
 #include "core/dom/QualifiedName.h"
 #include "core/html/HTMLMediaElement.h"
@@ skipping 26 matching lines @@
           Supplement<HTMLMediaElement>::from(element, supplementName()));
   if (!supplement) {
     supplement = new HTMLMediaElementRemotePlayback();
     provideTo(element, supplementName(), supplement);
   }
   return *supplement;
 }
 
 // static
 RemotePlayback* HTMLMediaElementRemotePlayback::remote(
+    ScriptState* scriptState,
     HTMLMediaElement& element) {
   HTMLMediaElementRemotePlayback& self =
       HTMLMediaElementRemotePlayback::from(element);
   Document& document = element.document();
   if (!document.frame())
     return nullptr;
 
   if (!self.m_remote)
-    self.m_remote = RemotePlayback::create(element);
+    self.m_remote = RemotePlayback::create(scriptState, element);
 
   return self.m_remote;
 }
 
 // static
 const char* HTMLMediaElementRemotePlayback::supplementName() {
   return "HTMLMediaElementRemotePlayback";
 }
 
 DEFINE_TRACE(HTMLMediaElementRemotePlayback) {
   visitor->trace(m_remote);
   Supplement<HTMLMediaElement>::trace(visitor);
 }
 
 }  // namespace blink