Add QuicStringPiece which is actually StringPiece.

net/quic/core/crypto/chacha20_poly1305_encrypter_test.cc

 // Copyright 2014 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/quic/core/crypto/chacha20_poly1305_encrypter.h"
 
 #include <memory>
 
 #include "net/quic/core/crypto/chacha20_poly1305_decrypter.h"
 #include "net/quic/core/quic_utils.h"
 #include "net/quic/platform/api/quic_text_utils.h"
 #include "net/quic/test_tools/quic_test_utils.h"
 
-using base::StringPiece;
 using std::string;
 
 namespace {
 
 // The test vectors come from RFC 7539 Section 2.8.2.
 
 // Each test vector consists of five strings of lowercase hexadecimal digits.
 // The strings may be empty (zero length). A test vector with a nullptr |key|
 // marks the end of an array of test vectors.
 struct TestVector {
@@ skipping 38 matching lines @@
     {nullptr}};
 
 }  // namespace
 
 namespace net {
 namespace test {
 
 // EncryptWithNonce wraps the |Encrypt| method of |encrypter| to allow passing
 // in an nonce and also to allocate the buffer needed for the ciphertext.
 QuicData* EncryptWithNonce(ChaCha20Poly1305Encrypter* encrypter,
-                           StringPiece nonce,
-                           StringPiece associated_data,
-                           StringPiece plaintext) {
+                           QuicStringPiece nonce,
+                           QuicStringPiece associated_data,
+                           QuicStringPiece plaintext) {
   size_t ciphertext_size = encrypter->GetCiphertextSize(plaintext.length());
   std::unique_ptr<char[]> ciphertext(new char[ciphertext_size]);
 
   if (!encrypter->Encrypt(nonce, associated_data, plaintext,
                           reinterpret_cast<unsigned char*>(ciphertext.get()))) {
     return nullptr;
   }
 
   return new QuicData(ciphertext.release(), ciphertext_size, true);
 }
 
 TEST(ChaCha20Poly1305EncrypterTest, EncryptThenDecrypt) {
   ChaCha20Poly1305Encrypter encrypter;
   ChaCha20Poly1305Decrypter decrypter;
 
   string key = QuicTextUtils::HexDecode(test_vectors[0].key);
   ASSERT_TRUE(encrypter.SetKey(key));
   ASSERT_TRUE(decrypter.SetKey(key));
   ASSERT_TRUE(encrypter.SetNoncePrefix("abcd"));
   ASSERT_TRUE(decrypter.SetNoncePrefix("abcd"));
 
   QuicPacketNumber packet_number = UINT64_C(0x123456789ABC);
   string associated_data = "associated_data";
   string plaintext = "plaintext";
   char encrypted[1024];
   size_t len;
   ASSERT_TRUE(encrypter.EncryptPacket(QuicVersionMax(), packet_number,
                                       associated_data, plaintext, encrypted,
                                       &len, arraysize(encrypted)));
-  StringPiece ciphertext(encrypted, len);
+  QuicStringPiece ciphertext(encrypted, len);
   char decrypted[1024];
   ASSERT_TRUE(decrypter.DecryptPacket(QuicVersionMax(), packet_number,
                                       associated_data, ciphertext, decrypted,
                                       &len, arraysize(decrypted)));
 }
 
 TEST(ChaCha20Poly1305EncrypterTest, Encrypt) {
   for (size_t i = 0; test_vectors[i].key != nullptr; i++) {
     // Decode the test vector.
     string key = QuicTextUtils::HexDecode(test_vectors[i].key);
     string pt = QuicTextUtils::HexDecode(test_vectors[i].pt);
     string iv = QuicTextUtils::HexDecode(test_vectors[i].iv);
     string fixed = QuicTextUtils::HexDecode(test_vectors[i].fixed);
     string aad = QuicTextUtils::HexDecode(test_vectors[i].aad);
     string ct = QuicTextUtils::HexDecode(test_vectors[i].ct);
 
     ChaCha20Poly1305Encrypter encrypter;
     ASSERT_TRUE(encrypter.SetKey(key));
     std::unique_ptr<QuicData> encrypted(EncryptWithNonce(
         &encrypter, fixed + iv,
         // This deliberately tests that the encrypter can handle an AAD that
         // is set to nullptr, as opposed to a zero-length, non-nullptr pointer.
-        StringPiece(aad.length() ? aad.data() : nullptr, aad.length()), pt));
+        QuicStringPiece(aad.length() ? aad.data() : nullptr, aad.length()),
+        pt));
     ASSERT_TRUE(encrypted.get());
     EXPECT_EQ(12u, ct.size() - pt.size());
     EXPECT_EQ(12u, encrypted->length() - pt.size());
 
     test::CompareCharArraysWithHexError("ciphertext", encrypted->data(),
                                         encrypted->length(), ct.data(),
                                         ct.length());
   }
 }
 
 TEST(ChaCha20Poly1305EncrypterTest, GetMaxPlaintextSize) {
   ChaCha20Poly1305Encrypter encrypter;
   EXPECT_EQ(1000u, encrypter.GetMaxPlaintextSize(1012));
   EXPECT_EQ(100u, encrypter.GetMaxPlaintextSize(112));
   EXPECT_EQ(10u, encrypter.GetMaxPlaintextSize(22));
 }
 
 TEST(ChaCha20Poly1305EncrypterTest, GetCiphertextSize) {
   ChaCha20Poly1305Encrypter encrypter;
   EXPECT_EQ(1012u, encrypter.GetCiphertextSize(1000));
   EXPECT_EQ(112u, encrypter.GetCiphertextSize(100));
   EXPECT_EQ(22u, encrypter.GetCiphertextSize(10));
 }
 
 }  // namespace test
 }  // namespace net