Add a QuicChromiumClock and make QuicClock abstract to match internal code.

net/tools/quic/quic_simple_client.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 client, which connects to a specified port and sends QUIC
 // request to that endpoint.
 
 #ifndef NET_TOOLS_QUIC_QUIC_SIMPLE_CLIENT_H_
 #define NET_TOOLS_QUIC_QUIC_SIMPLE_CLIENT_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/strings/string_piece.h"
 #include "net/base/ip_address.h"
 #include "net/base/ip_endpoint.h"
 #include "net/http/http_response_headers.h"
 #include "net/log/net_log.h"
 #include "net/quic/chromium/quic_chromium_packet_reader.h"
 #include "net/quic/core/quic_config.h"
 #include "net/quic/core/quic_spdy_stream.h"
+#include "net/quic/platform/impl/quic_chromium_clock.h"
 #include "net/tools/quic/quic_client_base.h"
 
 namespace net {
 
 class QuicChromiumAlarmFactory;
 class QuicChromiumConnectionHelper;
 class UDPClientSocket;
 
 
 namespace test {
@@ skipping 40 matching lines @@
 
   QuicChromiumAlarmFactory* CreateQuicAlarmFactory();
   QuicChromiumConnectionHelper* CreateQuicConnectionHelper();
 
   // Read a UDP packet and hand it to the framer.
   bool ReadAndProcessPacket();
 
   void StartPacketReaderIfNotStarted();
 
   //  Used by |helper_| to time alarms.
-  QuicClock clock_;
+  QuicChromiumClock clock_;
 
   // Address of the client if the client is connected to the server.
   IPEndPoint client_address_;
 
   // UDP socket connected to the server.
   std::unique_ptr<UDPClientSocket> socket_;
 
   // Tracks if the client is initialized to connect.
   bool initialized_;
 
   // The log used for the sockets.
   NetLog net_log_;
 
   std::unique_ptr<QuicChromiumPacketReader> packet_reader_;
 
   bool packet_reader_started_;
 
   base::WeakPtrFactory<QuicSimpleClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicSimpleClient);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_SIMPLE_CLIENT_H_