Cache-aware Resource loading

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

Index: third_party/WebKit/Source/core/fetch/Resource.h
diff --git a/third_party/WebKit/Source/core/fetch/Resource.h b/third_party/WebKit/Source/core/fetch/Resource.h
index d531ba9238a701cf07b63fb27007c78c9902ddf8..4f09eff486b71600820df76427ef0c3c2582d0d5 100644
--- a/third_party/WebKit/Source/core/fetch/Resource.h
+++ b/third_party/WebKit/Source/core/fetch/Resource.h
@@ -310,6 +310,19 @@ class CORE_EXPORT Resource : public GarbageCollectedFinalized<Resource>,
 
   virtual bool canReuse(const ResourceRequest&) const { return true; }
 
+  // If cache-aware loading is activated, this callback is called when the first
+  // disk-cache-only request failed due to cache miss. After this callback,
+  // cache-aware loading is deactivated and a reload with original request will
+  // be triggered right away in ResourceLoader.
+  virtual void willReloadAfterDiskCacheMiss() {}
+
+  // TODO(shaochuan): This is for saving back the actual ResourceRequest sent
+  // in ResourceFetcher::startLoad() for retry in cache-aware loading, remove
+  // once ResourceRequest is not modified in startLoad(). crbug.com/632580
+  void setResourceRequest(const ResourceRequest& resourceRequest) {
+    m_resourceRequest = resourceRequest;
+  }
+
   // Used by the MemoryCache to reduce the memory consumption of the entry.
   void prune();