Add QuicStringPiece which is actually StringPiece.

net/quic/chromium/quic_connection_logger.cc

Index: net/quic/chromium/quic_connection_logger.cc
diff --git a/net/quic/chromium/quic_connection_logger.cc b/net/quic/chromium/quic_connection_logger.cc
index 27128a3a0a01edb309274fa42411fa135267c501..8851c3bdcf4975663562c5a0d624fe1769b2d881 100644
--- a/net/quic/chromium/quic_connection_logger.cc
+++ b/net/quic/chromium/quic_connection_logger.cc
@@ -29,8 +29,8 @@
 #include "net/quic/core/quic_packets.h"
 #include "net/quic/core/quic_socket_address_coder.h"
 #include "net/quic/core/quic_time.h"
+#include "net/quic/platform/api/quic_string_piece.h"
 
-using base::StringPiece;
 using std::string;
 
 namespace net {
@@ -606,7 +606,7 @@ void QuicConnectionLogger::OnCryptoHandshakeMessageReceived(
       base::Bind(&NetLogQuicCryptoHandshakeMessageCallback, &message));
 
   if (message.tag() == kSHLO) {
-    StringPiece address;
+    QuicStringPiece address;
     QuicSocketAddressCoder decoder;
     if (message.GetStringPiece(kCADR, &address) &&
         decoder.Decode(address.data(), address.size())) {