Add QuicStringPiece which is actually StringPiece.

net/quic/core/crypto/aes_128_gcm_12_decrypter_test.cc

Index: net/quic/core/crypto/aes_128_gcm_12_decrypter_test.cc
diff --git a/net/quic/core/crypto/aes_128_gcm_12_decrypter_test.cc b/net/quic/core/crypto/aes_128_gcm_12_decrypter_test.cc
index c57d6707bfa1870184299a6b8268be47eaebd4b7..2a14d177f02bb8ccbe9f123f5eb6e5465704771c 100644
--- a/net/quic/core/crypto/aes_128_gcm_12_decrypter_test.cc
+++ b/net/quic/core/crypto/aes_128_gcm_12_decrypter_test.cc
@@ -10,7 +10,6 @@
 #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 {
@@ -200,11 +199,12 @@ namespace test {
 // DecryptWithNonce wraps the |Decrypt| method of |decrypter| to allow passing
 // in an nonce and also to allocate the buffer needed for the plaintext.
 QuicData* DecryptWithNonce(Aes128Gcm12Decrypter* decrypter,
-                           StringPiece nonce,
-                           StringPiece associated_data,
-                           StringPiece ciphertext) {
+                           QuicStringPiece nonce,
+                           QuicStringPiece associated_data,
+                           QuicStringPiece ciphertext) {
   QuicPacketNumber packet_number;
-  StringPiece nonce_prefix(nonce.data(), nonce.size() - sizeof(packet_number));
+  QuicStringPiece nonce_prefix(nonce.data(),
+                               nonce.size() - sizeof(packet_number));
   decrypter->SetNoncePrefix(nonce_prefix);
   memcpy(&packet_number, nonce.data() + nonce_prefix.size(),
          sizeof(packet_number));
@@ -265,7 +265,7 @@ TEST(Aes128Gcm12DecrypterTest, Decrypt) {
           // This deliberately tests that the decrypter can handle an AAD that
           // is set to nullptr, as opposed to a zero-length, non-nullptr
           // pointer.
-          aad.length() ? aad : StringPiece(), ciphertext));
+          aad.length() ? aad : QuicStringPiece(), ciphertext));
       if (!decrypted.get()) {
         EXPECT_FALSE(has_pt);
         continue;