Remove using namespace in net/quic/quic_stream_sequencer.h

net/quic/crypto/chacha20_poly1305_decrypter_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/crypto/chacha20_poly1305_decrypter.h"
 
+#include <string>
+
 #include "net/quic/test_tools/quic_test_utils.h"
 
 using base::StringPiece;
 
 namespace {
 
 // The test vectors come from draft-agl-tls-chacha20poly1305-04 Section 7.
 
 // Each test vector consists of six strings of lowercase hexadecimal digits.
 // The strings may be empty (zero length). A test vector with a NULL |key|
@@ skipping 72 matching lines @@
   if (!ChaCha20Poly1305Decrypter::IsSupported()) {
     LOG(INFO) << "ChaCha20+Poly1305 not supported. Test skipped.";
     return;
   }
 
   for (size_t i = 0; test_vectors[i].key != nullptr; i++) {
     // If not present then decryption is expected to fail.
     bool has_pt = test_vectors[i].pt;
 
     // Decode the test vector.
-    string key;
-    string iv;
-    string aad;
-    string ct;
-    string pt;
+    std::string key;
+    std::string iv;
+    std::string aad;
+    std::string ct;
+    std::string pt;
     ASSERT_TRUE(DecodeHexString(test_vectors[i].key, &key));
     ASSERT_TRUE(DecodeHexString(test_vectors[i].iv, &iv));
     ASSERT_TRUE(DecodeHexString(test_vectors[i].aad, &aad));
     ASSERT_TRUE(DecodeHexString(test_vectors[i].ct, &ct));
     if (has_pt) {
       ASSERT_TRUE(DecodeHexString(test_vectors[i].pt, &pt));
     }
 
     ChaCha20Poly1305Decrypter decrypter;
     ASSERT_TRUE(decrypter.SetKey(key));
     scoped_ptr<QuicData> decrypted(DecryptWithNonce(
         &decrypter, iv,
         // This deliberately tests that the decrypter 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()), ct));
     if (!decrypted.get()) {
       EXPECT_FALSE(has_pt);
       continue;
     }
     EXPECT_TRUE(has_pt);
 
     ASSERT_EQ(pt.length(), decrypted->length());
     test::CompareCharArraysWithHexError("plaintext", decrypted->data(),
                                         pt.length(), pt.data(), pt.length());
   }
 }
 
 }  // namespace test
 }  // namespace net