[WIP] WebFonts cache-aware timeout adaption

third_party/WebKit/Source/platform/network/NetworkUtils.h

 // 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.
 
 #ifndef NetworkUtils_h
 #define NetworkUtils_h
 
 #include "platform/PlatformExport.h"
 #include "wtf/Forward.h"
 
@@ skipping 15 matching lines @@
 
 PLATFORM_EXPORT String getDomainAndRegistry(const String& host,
                                             PrivateRegistryFilter);
 
 // Returns the decoded data url if url had a supported mimetype and parsing was
 // successful.
 PLATFORM_EXPORT PassRefPtr<SharedBuffer> parseDataURL(const KURL&,
                                                       AtomicString& mimetype,
                                                       AtomicString& charset);
 
+PLATFORM_EXPORT int cacheMissErrorCode();
+
+PLATFORM_EXPORT bool isCacheMissErrorCode(int code);
+
 }  // NetworkUtils
 
 }  // namespace blink
 
 #endif  // NetworkUtils_h