Add a quic_in_memory_cache_test data file.

net/tools/quic/quic_in_memory_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.
 
 #ifndef NET_TOOLS_QUIC_QUIC_IN_MEMORY_CACHE_H_
 #define NET_TOOLS_QUIC_QUIC_IN_MEMORY_CACHE_H_
 
 #include <string>
 
 #include "base/containers/hash_tables.h"
@@ skipping 55 matching lines @@
   void ResetForTests();
 
  private:
   typedef base::hash_map<std::string, Response*> ResponseMap;
 
 
   QuicInMemoryCache();
   friend struct DefaultSingletonTraits<QuicInMemoryCache>;
   ~QuicInMemoryCache();
 
+  void Initialize();
   std::string GetKey(const BalsaHeaders& response_headers) const;
 
   // Cached responses.
   ResponseMap responses_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicInMemoryCache);
 };
 
 }  // namespace tools
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_IN_MEMORY_CACHE_H_