Use VisibilityState enum and move WebPageVisibilityState to public/platform.

Source/modules/serviceworkers/ServiceWorkerContainer.cpp

 /*
  * Copyright (C) 2013 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 31 matching lines @@
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/MessagePort.h"
 #include "core/events/MessageEvent.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "modules/EventTargetModules.h"
 #include "modules/serviceworkers/ServiceWorker.h"
 #include "modules/serviceworkers/ServiceWorkerContainerClient.h"
 #include "modules/serviceworkers/ServiceWorkerError.h"
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
 #include "platform/RuntimeEnabledFeatures.h"
+#include "public/platform/WebPageVisibilityState.h"
 #include "public/platform/WebServiceWorker.h"
 #include "public/platform/WebServiceWorkerClientsInfo.h"
 #include "public/platform/WebServiceWorkerProvider.h"
 #include "public/platform/WebServiceWorkerRegistration.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebURL.h"
 
 namespace blink {
 
 // This wraps CallbackPromiseAdapter and resolves the promise with undefined
@@ skipping 221 matching lines @@
     return EventTargetNames::ServiceWorkerContainer;
 }
 
 bool ServiceWorkerContainer::getClientInfo(WebServiceWorkerClientInfo* info)
 {
     ExecutionContext* context = executionContext();
     // FIXME: Make this work for non-document context (e.g. shared workers).
     if (!context || !context->isDocument())
         return false;
     Document* document = toDocument(context);
+    // FIXME: remove info->visibilityState when Chromium is updated.
     info->visibilityState = document->visibilityState();
+    info->pageVisibilityState = static_cast<WebPageVisibilityState>(document->pageVisibilityState());
     info->isFocused = document->hasFocus();
     info->url = document->url();
     if (!document->frame())
         info->frameType = WebURLRequest::FrameTypeNone;
     else if (document->frame()->isMainFrame())
         info->frameType = WebURLRequest::FrameTypeTopLevel;
     else
         info->frameType = WebURLRequest::FrameTypeNested;
     return true;
 }
 
 ServiceWorkerContainer::ServiceWorkerContainer(ExecutionContext* executionContext)
     : ContextLifecycleObserver(executionContext)
     , m_provider(0)
 {
 
     if (!executionContext)
         return;
 
     m_ready = createReadyProperty();
 
     if (ServiceWorkerContainerClient* client = ServiceWorkerContainerClient::from(executionContext)) {
         m_provider = client->provider();
         if (m_provider)
             m_provider->setClient(this);
     }
 }
 
 } // namespace blink