[Blink, RemotePlayback] watchAvailability() implementation.

third_party/WebKit/Source/bindings/modules/v8/custom/V8RemotePlaybackCustom.cpp

+// Copyright 2016 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 "bindings/modules/v8/V8RemotePlayback.h"
+
+#include "bindings/core/v8/V8DOMWrapper.h"
+#include "modules/remoteplayback/RemotePlayback.h"
+
+namespace blink {
+
+void V8RemotePlayback::visitDOMWrapperCustom(
+    v8::Isolate* isolate,
+    ScriptWrappable* scriptWrappable,
+    const v8::Persistent<v8::Object>& wrapper) {
+  RemotePlayback* remotePlayback = scriptWrappable->toImpl<RemotePlayback>();
+  remotePlayback->setV8ReferencesForCallbacks(isolate, wrapper);
+}
+
+}  // namespace blink