Add QuicStringPiece which is actually StringPiece.

net/quic/core/crypto/aead_base_decrypter.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/aead_base_decrypter.h"
 
 #include <cstdint>
 
 #include "net/quic/core/quic_utils.h"
 #include "net/quic/platform/api/quic_bug_tracker.h"
 #include "net/quic/platform/api/quic_logging.h"
 #include "third_party/boringssl/src/include/openssl/err.h"
 #include "third_party/boringssl/src/include/openssl/evp.h"
 
-using base::StringPiece;
 using std::string;
 
 namespace net {
 
 namespace {
 
 // Clear OpenSSL error stack.
 void ClearOpenSslErrors() {
   while (ERR_get_error()) {
   }
@@ skipping 26 matching lines @@
       have_preliminary_key_(false) {
   DCHECK_GT(256u, key_size);
   DCHECK_GT(256u, auth_tag_size);
   DCHECK_GT(256u, nonce_prefix_size);
   DCHECK_LE(key_size_, sizeof(key_));
   DCHECK_LE(nonce_prefix_size_, sizeof(nonce_prefix_));
 }
 
 AeadBaseDecrypter::~AeadBaseDecrypter() {}
 
-bool AeadBaseDecrypter::SetKey(StringPiece key) {
+bool AeadBaseDecrypter::SetKey(QuicStringPiece key) {
   DCHECK_EQ(key.size(), key_size_);
   if (key.size() != key_size_) {
     return false;
   }
   memcpy(key_, key.data(), key.size());
 
   EVP_AEAD_CTX_cleanup(ctx_.get());
   if (!EVP_AEAD_CTX_init(ctx_.get(), aead_alg_, key_, key_size_, auth_tag_size_,
                          nullptr)) {
     DLogOpenSslErrors();
     return false;
   }
 
   return true;
 }
 
-bool AeadBaseDecrypter::SetNoncePrefix(StringPiece nonce_prefix) {
+bool AeadBaseDecrypter::SetNoncePrefix(QuicStringPiece nonce_prefix) {
   DCHECK_EQ(nonce_prefix.size(), nonce_prefix_size_);
   if (nonce_prefix.size() != nonce_prefix_size_) {
     return false;
   }
   memcpy(nonce_prefix_, nonce_prefix.data(), nonce_prefix.size());
   return true;
 }
 
-bool AeadBaseDecrypter::SetPreliminaryKey(StringPiece key) {
+bool AeadBaseDecrypter::SetPreliminaryKey(QuicStringPiece key) {
   DCHECK(!have_preliminary_key_);
   SetKey(key);
   have_preliminary_key_ = true;
 
   return true;
 }
 
 bool AeadBaseDecrypter::SetDiversificationNonce(
     const DiversificationNonce& nonce) {
   if (!have_preliminary_key_) {
     return true;
   }
 
   string key, nonce_prefix;
   DiversifyPreliminaryKey(
-      StringPiece(reinterpret_cast<const char*>(key_), key_size_),
-      StringPiece(reinterpret_cast<const char*>(nonce_prefix_),
-                  nonce_prefix_size_),
+      QuicStringPiece(reinterpret_cast<const char*>(key_), key_size_),
+      QuicStringPiece(reinterpret_cast<const char*>(nonce_prefix_),
+                      nonce_prefix_size_),
       nonce, key_size_, nonce_prefix_size_, &key, &nonce_prefix);
 
   if (!SetKey(key) || !SetNoncePrefix(nonce_prefix)) {
     DCHECK(false);
     return false;
   }
 
   have_preliminary_key_ = false;
   return true;
 }
 
 bool AeadBaseDecrypter::DecryptPacket(QuicVersion /*version*/,
                                       QuicPacketNumber packet_number,
-                                      StringPiece associated_data,
-                                      StringPiece ciphertext,
+                                      QuicStringPiece associated_data,
+                                      QuicStringPiece ciphertext,
                                       char* output,
                                       size_t* output_length,
                                       size_t max_output_length) {
   if (ciphertext.length() < auth_tag_size_) {
     return false;
   }
 
   if (have_preliminary_key_) {
     QUIC_BUG << "Unable to decrypt while key diversification is pending";
     return false;
@@ skipping 11 matching lines @@
           reinterpret_cast<const uint8_t*>(associated_data.data()),
           associated_data.size())) {
     // Because QuicFramer does trial decryption, decryption errors are expected
     // when encryption level changes. So we don't log decryption errors.
     ClearOpenSslErrors();
     return false;
   }
   return true;
 }
 
-StringPiece AeadBaseDecrypter::GetKey() const {
-  return StringPiece(reinterpret_cast<const char*>(key_), key_size_);
+QuicStringPiece AeadBaseDecrypter::GetKey() const {
+  return QuicStringPiece(reinterpret_cast<const char*>(key_), key_size_);
 }
 
-StringPiece AeadBaseDecrypter::GetNoncePrefix() const {
+QuicStringPiece AeadBaseDecrypter::GetNoncePrefix() const {
   if (nonce_prefix_size_ == 0) {
-    return StringPiece();
+    return QuicStringPiece();
   }
-  return StringPiece(reinterpret_cast<const char*>(nonce_prefix_),
-                     nonce_prefix_size_);
+  return QuicStringPiece(reinterpret_cast<const char*>(nonce_prefix_),
+                         nonce_prefix_size_);
 }
 
 }  // namespace net