Add QuicStringPiece which is actually StringPiece.

net/quic/core/crypto/channel_id.h

 // Copyright 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.
 
 #ifndef NET_QUIC_CORE_CRYPTO_CHANNEL_ID_H_
 #define NET_QUIC_CORE_CRYPTO_CHANNEL_ID_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
-#include "base/strings/string_piece.h"
 #include "net/quic/core/quic_types.h"
 #include "net/quic/platform/api/quic_export.h"
+#include "net/quic/platform/api/quic_string_piece.h"
 
 namespace net {
 
 // ChannelIDKey is an interface that supports signing with and serializing a
 // ChannelID key.
 class QUIC_EXPORT_PRIVATE ChannelIDKey {
  public:
   virtual ~ChannelIDKey() {}
 
   // Sign signs |signed_data| using the ChannelID private key and puts the
   // signature into |out_signature|. It returns true on success.
-  virtual bool Sign(base::StringPiece signed_data,
+  virtual bool Sign(QuicStringPiece signed_data,
                     std::string* out_signature) const = 0;
 
   // SerializeKey returns the serialized ChannelID public key.
   virtual std::string SerializeKey() const = 0;
 };
 
 // ChannelIDSourceCallback provides a generic mechanism for a ChannelIDSource
 // to call back after an asynchronous GetChannelIDKey operation.
 class ChannelIDSourceCallback {
  public:
@@ skipping 33 matching lines @@
   // a ChannelID signature cannot be used in a different context. (The
   // terminating NUL byte is inclued.)
   static const char kContextStr[];
   // kClientToServerStr follows kContextStr to specify that the ChannelID is
   // being used in the client to server direction. (The terminating NUL byte is
   // included.)
   static const char kClientToServerStr[];
 
   // Verify returns true iff |signature| is a valid signature of |signed_data|
   // by |key|.
-  static bool Verify(base::StringPiece key,
-                     base::StringPiece signed_data,
-                     base::StringPiece signature);
+  static bool Verify(QuicStringPiece key,
+                     QuicStringPiece signed_data,
+                     QuicStringPiece signature);
 
   // FOR TESTING ONLY: VerifyRaw returns true iff |signature| is a valid
   // signature of |signed_data| by |key|. |is_channel_id_signature| indicates
   // whether |signature| is a ChannelID signature (with kContextStr prepended
   // to the data to be signed).
-  static bool VerifyRaw(base::StringPiece key,
-                        base::StringPiece signed_data,
-                        base::StringPiece signature,
+  static bool VerifyRaw(QuicStringPiece key,
+                        QuicStringPiece signed_data,
+                        QuicStringPiece signature,
                         bool is_channel_id_signature);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChannelIDVerifier);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_CRYPTO_CHANNEL_ID_H_