Add QuicStringPiece which is actually StringPiece.

net/quic/core/crypto/quic_decrypter.h

Index: net/quic/core/crypto/quic_decrypter.h
diff --git a/net/quic/core/crypto/quic_decrypter.h b/net/quic/core/crypto/quic_decrypter.h
index a47643ea8b7d503c5b7ce31d2e91cc9da11b6d2b..0b9a700a0af3dac60c857bc71fb93b4edb148dda 100644
--- a/net/quic/core/crypto/quic_decrypter.h
+++ b/net/quic/core/crypto/quic_decrypter.h
@@ -10,6 +10,7 @@
 
 #include "net/quic/core/quic_packets.h"
 #include "net/quic/platform/api/quic_export.h"
+#include "net/quic/platform/api/quic_string_piece.h"
 
 namespace net {
 
@@ -23,7 +24,7 @@ class QUIC_EXPORT_PRIVATE QuicDecrypter {
   //
   // NOTE: The key is the client_write_key or server_write_key derived from
   // the master secret.
-  virtual bool SetKey(base::StringPiece key) = 0;
+  virtual bool SetKey(QuicStringPiece key) = 0;
 
   // Sets the fixed initial bytes of the nonce. Returns true on success,
   // false on failure.
@@ -40,7 +41,7 @@ class QUIC_EXPORT_PRIVATE QuicDecrypter {
   //
   // The security of the nonce format requires that QUIC never reuse a
   // packet number, even when retransmitting a lost packet.
-  virtual bool SetNoncePrefix(base::StringPiece nonce_prefix) = 0;
+  virtual bool SetNoncePrefix(QuicStringPiece nonce_prefix) = 0;
 
   // Sets the encryption key. Returns true on success, false on failure.
   // |DecryptPacket| may not be called until |SetDiversificationNonce| is
@@ -49,7 +50,7 @@ class QUIC_EXPORT_PRIVATE QuicDecrypter {
   //
   // If this function is called, neither |SetKey| nor |SetNoncePrefix| may be
   // called.
-  virtual bool SetPreliminaryKey(base::StringPiece key) = 0;
+  virtual bool SetPreliminaryKey(QuicStringPiece key) = 0;
 
   // SetDiversificationNonce uses |nonce| to derive final keys based on the
   // input keying material given by calling |SetPreliminaryKey|.
@@ -68,8 +69,8 @@ class QUIC_EXPORT_PRIVATE QuicDecrypter {
   // to non-authentic inputs, as opposed to other reasons for failure.
   virtual bool DecryptPacket(QuicVersion version,
                              QuicPacketNumber packet_number,
-                             base::StringPiece associated_data,
-                             base::StringPiece ciphertext,
+                             QuicStringPiece associated_data,
+                             QuicStringPiece ciphertext,
                              char* output,
                              size_t* output_length,
                              size_t max_output_length) = 0;
@@ -81,11 +82,11 @@ class QUIC_EXPORT_PRIVATE QuicDecrypter {
   virtual uint32_t cipher_id() const = 0;
 
   // For use by unit tests only.
-  virtual base::StringPiece GetKey() const = 0;
-  virtual base::StringPiece GetNoncePrefix() const = 0;
+  virtual QuicStringPiece GetKey() const = 0;
+  virtual QuicStringPiece GetNoncePrefix() const = 0;
 
-  static void DiversifyPreliminaryKey(base::StringPiece preliminary_key,
-                                      base::StringPiece nonce_prefix,
+  static void DiversifyPreliminaryKey(QuicStringPiece preliminary_key,
+                                      QuicStringPiece nonce_prefix,
                                       const DiversificationNonce& nonce,
                                       size_t key_size,
                                       size_t nonce_prefix_size,