Pass QuicInMemoryCache directly instead of using a singleton.

net/tools/quic/quic_simple_server_session.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.
 //
 // A toy server specific QuicSession subclass.
 
 #ifndef NET_TOOLS_QUIC_QUIC_SIMPLE_SERVER_SESSION_H_
 #define NET_TOOLS_QUIC_QUIC_SIMPLE_SERVER_SESSION_H_
 
 #include <stdint.h>
@@ skipping 46 matching lines @@
     SpdyPriority priority;
     bool is_cancelled;
   };
 
   // Takes ownership of |connection|.
   QuicSimpleServerSession(const QuicConfig& config,
                           QuicConnection* connection,
                           QuicSession::Visitor* visitor,
                           QuicCryptoServerStream::Helper* helper,
                           const QuicCryptoServerConfig* crypto_config,
-                          QuicCompressedCertsCache* compressed_certs_cache);
+                          QuicCompressedCertsCache* compressed_certs_cache,
+                          QuicInMemoryCache* in_memory_cache);
 
   ~QuicSimpleServerSession() override;
 
   // When a stream is marked draining, it will decrease the number of open
   // streams. If it is an outgoing stream, try to open a new stream to send
   // remaing push responses.
   void StreamDraining(QuicStreamId id) override;
 
   // Override base class to detact client sending data on server push stream.
   void OnStreamFrame(const QuicStreamFrame& frame) override;
@@ skipping 20 matching lines @@
   void HandleFrameOnNonexistentOutgoingStream(QuicStreamId stream_id) override;
   // Override to handle reseting locally preserved streams.
   void HandleRstOnValidNonexistentStream(
       const QuicRstStreamFrame& frame) override;
 
   // QuicServerSessionBaseMethod:
   QuicCryptoServerStreamBase* CreateQuicCryptoServerStream(
       const QuicCryptoServerConfig* crypto_config,
       QuicCompressedCertsCache* compressed_certs_cache) override;
 
+  QuicInMemoryCache* in_memory_cache() { return in_memory_cache_; }
+
  private:
   friend class test::QuicSimpleServerSessionPeer;
 
   // Create a server push headers block by copying request's headers block.
   // But replace or add these pseudo-headers as they are specific to each
   // request:
   // :authority, :path, :method, :scheme, referer.
   // Copying the rest headers ensures they are the same as the original
   // request, especially cookies.
   SpdyHeaderBlock SynthesizePushRequestHeaders(
@@ skipping 25 matching lines @@
   QuicStreamId highest_promised_stream_id_;
 
   // Promised streams which hasn't been created yet because of max_open_stream_
   // limit. New element is added to the end of the queue.
   // Since outgoing stream is created in sequence, stream_id of each element in
   // the queue also increases by 2 from previous one's. The front element's
   // stream_id is always next_outgoing_stream_id_, and the last one is always
   // highest_promised_stream_id_.
   std::deque<PromisedStreamInfo> promised_streams_;
 
+  QuicInMemoryCache* in_memory_cache_;  // Not owned.
+
   DISALLOW_COPY_AND_ASSIGN(QuicSimpleServerSession);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_SIMPLE_SERVER_SESSION_H_