[WIP] WebFonts cache-aware timeout adaption

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

Index: third_party/WebKit/Source/core/fetch/ResourceClient.h
diff --git a/third_party/WebKit/Source/core/fetch/ResourceClient.h b/third_party/WebKit/Source/core/fetch/ResourceClient.h
index f75dd04d45ee58eb8ae5429cff552226b124d8c8..76cc1cceb1df0a577377f4ac6d71707c910b3650 100644
--- a/third_party/WebKit/Source/core/fetch/ResourceClient.h
+++ b/third_party/WebKit/Source/core/fetch/ResourceClient.h
@@ -52,6 +52,8 @@ class CORE_EXPORT ResourceClient : public GarbageCollectedMixin {
     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;