[WIP] WebFonts cache-aware timeout adaption

third_party/WebKit/Source/core/fetch/ResourceClient.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
@@ skipping 34 matching lines @@
   };
 
   virtual ~ResourceClient() {}
   virtual void notifyFinished(Resource*) {}
 
   static bool isExpectedType(ResourceClient*) { return true; }
   virtual ResourceClientType getResourceClientType() const {
     return BaseResourceType;
   }
 
+  virtual void willReloadAfterDiskCacheMiss(Resource*) {}

[Takashi Toyoshima, 2016/10/05 07:06:18]

not sure since this CL does not contain actual FontResourceClient
implementation, but may be able to make it "const Resource*", and it could help
to restrict accesses to Resource in the callback?

[hiroshige, 2016/10/05 08:27:10]

I also would like to restrict how ResourceClients accesses the Resource, but
anyway ResourceClients have (mutable) references to Resource (e.g. as
Member<Resource>), so I'm not sure making this pointer const helps much.
(No reason to not doing so though)

[Shao-Chuan Lee, 2016/10/05 10:16:10]

Now using const Resource* here.

+
   // Name for debugging, e.g. shown in memory-infra.
   virtual String debugName() const = 0;
 
   DEFINE_INLINE_VIRTUAL_TRACE() {}
 
  protected:
   ResourceClient() {}
 };
 }  // namespace blink
 
 #endif