Pass QuicInMemoryCache directly instead of using a singleton.

net/tools/quic/quic_simple_server_stream.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_SIMPLE_SERVER_STREAM_H_
 #define NET_TOOLS_QUIC_QUIC_SIMPLE_SERVER_STREAM_H_
 
 #include <stddef.h>
 
 #include <string>
 
 #include "base/macros.h"
 #include "net/quic/core/quic_protocol.h"
 #include "net/quic/core/quic_spdy_stream.h"
 #include "net/spdy/spdy_framer.h"
+#include "net/tools/quic/quic_in_memory_cache.h"
 
 namespace net {
 
 
 namespace test {
 class QuicSimpleServerStreamPeer;
 }  // namespace test
 
 // All this does right now is aggregate data, and on fin, send an HTTP
 // response.
 class QuicSimpleServerStream : public QuicSpdyStream {
  public:
-  QuicSimpleServerStream(QuicStreamId id, QuicSpdySession* session);
+  QuicSimpleServerStream(QuicStreamId id,
+                         QuicSpdySession* session,
+                         QuicInMemoryCache* in_memory_cache);
   ~QuicSimpleServerStream() override;
 
   // QuicSpdyStream
   void OnInitialHeadersComplete(bool fin,
                                 size_t frame_len,
                                 const QuicHeaderList& header_list) override;
   void OnTrailingHeadersComplete(bool fin,
                                  size_t frame_len,
                                  const QuicHeaderList& header_list) override;
 
@@ skipping 34 matching lines @@
   const std::string& body() { return body_; }
 
  private:
   friend class test::QuicSimpleServerStreamPeer;
 
   // The parsed headers received from the client.
   SpdyHeaderBlock request_headers_;
   int64_t content_length_;
   std::string body_;
 
+  QuicInMemoryCache* in_memory_cache_;  // Not owned.
+
   DISALLOW_COPY_AND_ASSIGN(QuicSimpleServerStream);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_SIMPLE_SERVER_STREAM_H_