M57: Add UseCounter for ServiceWorkerNavigationPreload.

third_party/WebKit/public/platform/WebURLResponse.h

 /*
  * 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 263 matching lines @@
   // the ServiceWorker. Null if the response isn't from the CacheStorage.
   BLINK_PLATFORM_EXPORT WebString cacheStorageCacheName() const;
   BLINK_PLATFORM_EXPORT void setCacheStorageCacheName(const WebString&);
 
   // The headers that should be exposed according to CORS. Only guaranteed
   // to be set if the response was served by a ServiceWorker.
   BLINK_PLATFORM_EXPORT WebVector<WebString> corsExposedHeaderNames() const;
   BLINK_PLATFORM_EXPORT void setCorsExposedHeaderNames(
       const WebVector<WebString>&);
 
+  // Whether service worker navigation preload occurred.
+  // See ServiceWorkerResponseInfo::did_navigation_preload() for
+  // details.
+  BLINK_PLATFORM_EXPORT bool didServiceWorkerNavigationPreload() const;
+  BLINK_PLATFORM_EXPORT void setDidServiceWorkerNavigationPreload(bool);
+
   // This indicates the location of a downloaded response if the
   // WebURLRequest had the downloadToFile flag set to true. This file path
   // remains valid for the lifetime of the WebURLLoader used to create it.
   BLINK_PLATFORM_EXPORT WebString downloadFilePath() const;
   BLINK_PLATFORM_EXPORT void setDownloadFilePath(const WebString&);
 
   // Remote IP address of the socket which fetched this resource.
   BLINK_PLATFORM_EXPORT WebString remoteIPAddress() const;
   BLINK_PLATFORM_EXPORT void setRemoteIPAddress(const WebString&);
 
@@ skipping 39 matching lines @@
   // instance it contains.
   std::unique_ptr<ResourceResponseContainer> m_ownedResourceResponse;
 
   // Should never be null.
   ResourceResponse* m_resourceResponse;
 };
 
 }  // namespace blink
 
 #endif