Http Cache: chain GetLoadState from transactions waiting for...

net/http/http_cache.h

Index: net/http/http_cache.h
===================================================================
--- net/http/http_cache.h	(revision 52151)
+++ net/http/http_cache.h	(working copy)
@@ -28,6 +28,7 @@
 #include "base/weak_ptr.h"
 #include "net/base/cache_type.h"
 #include "net/base/completion_callback.h"
+#include "net/base/load_states.h"
 #include "net/http/http_transaction_factory.h"
 
 class GURL;
@@ -310,6 +311,9 @@
   // transactions can start reading from this entry.
   void ConvertWriterToReader(ActiveEntry* entry);
 
+  // Returns the LoadState of the provided pending transaction.
+  LoadState GetLoadStateForPendingTransaction(const Transaction* trans);
+
   // Removes the transaction |trans|, from the pending list of an entry
   // (PendingOp, active or doomed entry).
   void RemovePendingTransaction(Transaction* trans);