Add QuicStringPiece which is actually StringPiece.

net/quic/core/crypto/crypto_utils.h

Index: net/quic/core/crypto/crypto_utils.h
diff --git a/net/quic/core/crypto/crypto_utils.h b/net/quic/core/crypto/crypto_utils.h
index e956e885dacc34af66acc9b43ddbb2edd5c16d1f..c95e7c2734f88c755c0bd200de7438b4fdca95bd 100644
--- a/net/quic/core/crypto/crypto_utils.h
+++ b/net/quic/core/crypto/crypto_utils.h
@@ -12,13 +12,13 @@
 #include <string>
 
 #include "base/macros.h"
-#include "base/strings/string_piece.h"
 #include "net/quic/core/crypto/crypto_handshake.h"
 #include "net/quic/core/crypto/crypto_handshake_message.h"
 #include "net/quic/core/crypto/crypto_protocol.h"
 #include "net/quic/core/quic_packets.h"
 #include "net/quic/core/quic_time.h"
 #include "net/quic/platform/api/quic_export.h"
+#include "net/quic/platform/api/quic_string_piece.h"
 
 namespace net {
 
@@ -74,7 +74,7 @@ class QUIC_EXPORT_PRIVATE CryptoUtils {
   //   <20 bytes> random
   static void GenerateNonce(QuicWallTime now,
                             QuicRandom* random_generator,
-                            base::StringPiece orbit,
+                            QuicStringPiece orbit,
                             std::string* nonce);
 
   // DeriveKeys populates |crypters->encrypter|, |crypters->decrypter|, and
@@ -93,10 +93,10 @@ class QUIC_EXPORT_PRIVATE CryptoUtils {
   // decrypter will only be keyed to a preliminary state: a call to
   // |SetDiversificationNonce| with a diversification nonce will be needed to
   // complete keying.
-  static bool DeriveKeys(base::StringPiece premaster_secret,
+  static bool DeriveKeys(QuicStringPiece premaster_secret,
                          QuicTag aead,
-                         base::StringPiece client_nonce,
-                         base::StringPiece server_nonce,
+                         QuicStringPiece client_nonce,
+                         QuicStringPiece server_nonce,
                          const std::string& hkdf_input,
                          Perspective perspective,
                          Diversification diversification,
@@ -107,15 +107,15 @@ class QUIC_EXPORT_PRIVATE CryptoUtils {
   // dependent on |subkey_secret|, |label|, and |context|. Returns false if the
   // parameters are invalid (e.g. |label| contains null bytes); returns true on
   // success.
-  static bool ExportKeyingMaterial(base::StringPiece subkey_secret,
-                                   base::StringPiece label,
-                                   base::StringPiece context,
+  static bool ExportKeyingMaterial(QuicStringPiece subkey_secret,
+                                   QuicStringPiece label,
+                                   QuicStringPiece context,
                                    size_t result_len,
                                    std::string* result);
 
   // Computes the FNV-1a hash of the provided DER-encoded cert for use in the
   // XLCT tag.
-  static uint64_t ComputeLeafCertHash(base::StringPiece cert);
+  static uint64_t ComputeLeafCertHash(QuicStringPiece cert);
 
   // Validates that |server_hello| is actually an SHLO message and that it is
   // not part of a downgrade attack.