Add QuicStringPiece which is actually StringPiece.

net/tools/quic/quic_dispatcher_test.cc

 // 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.
 
 #include "net/tools/quic/quic_dispatcher.h"
 
 #include <memory>
 #include <ostream>
 #include <string>
 
@@ skipping 20 matching lines @@
 #include "net/tools/quic/quic_packet_writer_wrapper.h"
 #include "net/tools/quic/quic_simple_crypto_server_stream_helper.h"
 #include "net/tools/quic/quic_time_wait_list_manager.h"
 #include "net/tools/quic/stateless_rejector.h"
 #include "net/tools/quic/test_tools/mock_quic_time_wait_list_manager.h"
 #include "net/tools/quic/test_tools/quic_dispatcher_peer.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gmock_mutant.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using base::StringPiece;
 using std::string;
 using testing::CreateFunctor;
 using testing::DoAll;
 using testing::InSequence;
 using testing::Invoke;
 using testing::Return;
 using testing::WithoutArgs;
 using testing::_;
 
 static const size_t kDefaultMaxConnectionsInStore = 100;
@@ skipping 2013 matching lines @@
   check.Call(2);
   GetFakeProofSource()->InvokePendingCallback(0);
   ASSERT_EQ(GetFakeProofSource()->NumPendingCallbacks(), 0);
   EXPECT_FALSE(store->HasBufferedPackets(conn_id));
   EXPECT_FALSE(time_wait_list_manager_->IsConnectionIdInTimeWait(conn_id));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net