Add QuicStringPiece which is actually StringPiece.

net/quic/test_tools/quic_crypto_server_config_peer.h

 // Copyright 2016 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_QUIC_TEST_TOOLS_QUIC_CRYPTO_SERVER_CONFIG_PEER_H_
 #define NET_QUIC_TEST_TOOLS_QUIC_CRYPTO_SERVER_CONFIG_PEER_H_
 
 #include "net/quic/core/crypto/quic_crypto_server_config.h"
+#include "net/quic/platform/api/quic_string_piece.h"
 
 namespace net {
 namespace test {
 
 // Peer for accessing otherwise private members of a QuicCryptoServerConfig.
 class QuicCryptoServerConfigPeer {
  public:
   explicit QuicCryptoServerConfigPeer(QuicCryptoServerConfig* server_config)
       : server_config_(server_config) {}
 
@@ skipping 19 matching lines @@
       std::string config_id,
       SourceAddressTokens previous_tokens,
       const QuicIpAddress& ip,
       QuicRandom* rand,
       QuicWallTime now,
       CachedNetworkParameters* cached_network_params);
 
   // Attempts to validate the tokens in |tokens|.
   HandshakeFailureReason ValidateSourceAddressTokens(
       std::string config_id,
-      base::StringPiece tokens,
+      QuicStringPiece tokens,
       const QuicIpAddress& ip,
       QuicWallTime now,
       CachedNetworkParameters* cached_network_params);
 
   // Attempts to validate the single source address token in |token|.
   HandshakeFailureReason ValidateSingleSourceAddressToken(
-      base::StringPiece token,
+      QuicStringPiece token,
       const QuicIpAddress& ip,
       QuicWallTime now);
 
   // Returns a new server nonce.
   std::string NewServerNonce(QuicRandom* rand, QuicWallTime now) const;
 
   // CheckConfigs compares the state of the Configs in |server_config_| to the
   // description given as arguments.
   // The first of each pair is the server config ID of a Config. The second is a
   // boolean describing whether the config is the primary. For example:
@@ skipping 28 matching lines @@
   uint32_t source_address_token_lifetime_secs();
 
  private:
   QuicCryptoServerConfig* server_config_;
 };
 
 }  // namespace test
 }  // namespace net
 
 #endif  // NET_QUIC_TEST_TOOLS_QUIC_CRYPTO_SERVER_CONFIG_PEER_H_