[Net] Propagate priority changes from URLRequest to HttpTransaction

net/http/http_cache.h

 // Copyright (c) 2012 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.
 
 // This file declares a HttpTransactionFactory implementation that can be
 // layered on top of another HttpTransactionFactory to add HTTP caching.  The
 // caching logic follows RFC 2616 (any exceptions are called out in the code).
 //
 // The HttpCache takes a disk_cache::Backend as a parameter, and uses that for
 // the cache storage.
@@ skipping 188 matching lines @@
     kResponseInfoIndex = 0,
     kResponseContentIndex,
     kMetadataIndex,
 
     // Must remain at the end of the enum.
     kNumCacheEntryDataIndices
   };
   friend class ViewCacheHelper;
 
  private:
+  friend class HttpCacheTransactionTest;
+
   // Types --------------------------------------------------------------------
 
   class MetadataWriter;
   class Transaction;
   class WorkItem;
   friend class Transaction;
   friend class InfiniteCache;
   struct PendingOp;  // Info for an entry under construction.
 
   typedef std::list<Transaction*> TransactionList;
@@ skipping 176 matching lines @@
   scoped_ptr<PlaybackCacheMap> playback_cache_map_;
 
   InfiniteCache infinite_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpCache);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_CACHE_H_