Provide an overload to WebView::create that does not require a WebViewClient.

third_party/WebKit/Source/web/WebSharedWorkerImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 108 matching lines @@
   m_workerInspectorProxy->workerThreadTerminated();
 }
 
 void WebSharedWorkerImpl::initializeLoader() {
   DCHECK(isMainThread());
 
   // Create 'shadow page'. This page is never displayed, it is used to proxy the
   // loading requests from the worker context to the rest of WebKit and Chromium
   // infrastructure.
   DCHECK(!m_webView);
-  m_webView = WebView::create(nullptr, WebPageVisibilityStateVisible);
+  m_webView = WebView::create(WebPageVisibilityStateVisible);
   // FIXME: http://crbug.com/363843. This needs to find a better way to
   // not create graphics layers.
   m_webView->settings()->setAcceleratedCompositingEnabled(false);
   // FIXME: Settings information should be passed to the Worker process from
   // Browser process when the worker is created (similar to
   // RenderThread::OnCreateNewView).
   m_mainFrame = toWebLocalFrameImpl(
       WebLocalFrame::create(WebTreeScopeType::Document, this,
                             Platform::current()->interfaceProvider(), nullptr));
   m_webView->setMainFrame(m_mainFrame.get());
@@ skipping 299 matching lines @@
   if (devtoolsAgent)
     devtoolsAgent->dispatchOnInspectorBackend(sessionId, callId, method,
                                               message);
 }
 
 WebSharedWorker* WebSharedWorker::create(WebSharedWorkerClient* client) {
   return new WebSharedWorkerImpl(client);
 }
 
 }  // namespace blink