Add QuicStringPiece which is actually StringPiece.

net/quic/core/crypto/crypto_secret_boxer.cc

 // Copyright (c) 2013 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/crypto_secret_boxer.h"
 
 #include <memory>
 
 #include "base/logging.h"
 #include "net/quic/core/crypto/aes_128_gcm_12_decrypter.h"
 #include "net/quic/core/crypto/aes_128_gcm_12_encrypter.h"
 #include "net/quic/core/crypto/crypto_protocol.h"
 #include "net/quic/core/crypto/quic_decrypter.h"
 #include "net/quic/core/crypto/quic_encrypter.h"
 #include "net/quic/core/crypto/quic_random.h"
 
-using base::StringPiece;
 using std::string;
 
 namespace net {
 
 // Defined kKeySize for GetKeySize() and SetKey().
 static const size_t kKeySize = 16;
 
 // kBoxNonceSize contains the number of bytes of nonce that we use in each box.
 // TODO(rtenneti): Add support for kBoxNonceSize to be 16 bytes.
 //
@@ skipping 19 matching lines @@
 void CryptoSecretBoxer::SetKeys(const std::vector<string>& keys) {
   DCHECK(!keys.empty());
   std::vector<string> copy = keys;
   for (const string& key : keys) {
     DCHECK_EQ(kKeySize, key.size());
   }
   QuicWriterMutexLock l(&lock_);
   keys_.swap(copy);
 }
 
-string CryptoSecretBoxer::Box(QuicRandom* rand, StringPiece plaintext) const {
+string CryptoSecretBoxer::Box(QuicRandom* rand,
+                              QuicStringPiece plaintext) const {
   std::unique_ptr<Aes128Gcm12Encrypter> encrypter(new Aes128Gcm12Encrypter());
   {
     QuicReaderMutexLock l(&lock_);
     DCHECK_EQ(kKeySize, keys_[0].size());
     if (!encrypter->SetKey(keys_[0])) {
       DLOG(DFATAL) << "CryptoSecretBoxer's encrypter->SetKey failed.";
       return string();
     }
   }
   size_t ciphertext_size = encrypter->GetCiphertextSize(plaintext.length());
 
   string ret;
   const size_t len = kBoxNonceSize + ciphertext_size;
   ret.resize(len);
   char* data = &ret[0];
 
   // Generate nonce.
   rand->RandBytes(data, kBoxNonceSize);
   memcpy(data + kBoxNonceSize, plaintext.data(), plaintext.size());
 
   if (!encrypter->Encrypt(
-          StringPiece(data, kBoxNonceSize), StringPiece(), plaintext,
+          QuicStringPiece(data, kBoxNonceSize), QuicStringPiece(), plaintext,
           reinterpret_cast<unsigned char*>(data + kBoxNonceSize))) {
     DLOG(DFATAL) << "CryptoSecretBoxer's Encrypt failed.";
     return string();
   }
 
   return ret;
 }
 
-bool CryptoSecretBoxer::Unbox(StringPiece ciphertext,
+bool CryptoSecretBoxer::Unbox(QuicStringPiece ciphertext,
                               string* out_storage,
-                              StringPiece* out) const {
+                              QuicStringPiece* out) const {
   if (ciphertext.size() < kBoxNonceSize) {
     return false;
   }
 
-  StringPiece nonce(ciphertext.data(), kBoxNonceSize);
+  QuicStringPiece nonce(ciphertext.data(), kBoxNonceSize);
   ciphertext.remove_prefix(kBoxNonceSize);
   QuicPacketNumber packet_number;
-  StringPiece nonce_prefix(nonce.data(), nonce.size() - sizeof(packet_number));
+  QuicStringPiece nonce_prefix(nonce.data(),
+                               nonce.size() - sizeof(packet_number));
   memcpy(&packet_number, nonce.data() + nonce_prefix.size(),
          sizeof(packet_number));
 
   std::unique_ptr<Aes128Gcm12Decrypter> decrypter(new Aes128Gcm12Decrypter());
   char plaintext[kMaxPacketSize];
   size_t plaintext_length = 0;
   bool ok = false;
   {
     QuicReaderMutexLock l(&lock_);
     for (const string& key : keys_) {
       if (decrypter->SetKey(key)) {
         decrypter->SetNoncePrefix(nonce_prefix);
         if (decrypter->DecryptPacket(QUIC_VERSION_36, packet_number,
-                                     /*associated data=*/StringPiece(),
+                                     /*associated data=*/QuicStringPiece(),
                                      ciphertext, plaintext, &plaintext_length,
                                      kMaxPacketSize)) {
           ok = true;
           break;
         }
       }
     }
   }
   if (!ok) {
     return false;
   }
 
   out_storage->resize(plaintext_length);
   out_storage->assign(plaintext, plaintext_length);
   out->set(out_storage->data(), plaintext_length);
   return true;
 }
 
 }  // namespace net