Add QuicStringPiece which is actually StringPiece.

net/quic/core/crypto/crypto_framer.h

 // Copyright (c) 2012 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_CRYPTO_FRAMER_H_
 #define NET_QUIC_CORE_CRYPTO_CRYPTO_FRAMER_H_
 
 #include <cstddef>
 #include <cstdint>
 #include <memory>
 #include <utility>
 #include <vector>
 
-#include "base/strings/string_piece.h"
 #include "net/quic/core/crypto/crypto_handshake_message.h"
 #include "net/quic/core/quic_packets.h"
 #include "net/quic/platform/api/quic_export.h"
 
 namespace net {
 
 class CryptoFramer;
 class QuicData;
 class QuicDataWriter;
 
 class QUIC_EXPORT_PRIVATE CryptoFramerVisitorInterface {
  public:
   virtual ~CryptoFramerVisitorInterface() {}
 
   // Called if an error is detected.
   virtual void OnError(CryptoFramer* framer) = 0;
 
   // Called when a complete handshake message has been parsed.
   virtual void OnHandshakeMessage(const CryptoHandshakeMessage& message) = 0;
 };
 
 // A class for framing the crypto messages that are exchanged in a QUIC
 // session.
 class QUIC_EXPORT_PRIVATE CryptoFramer {
  public:
   CryptoFramer();
 
   virtual ~CryptoFramer();
 
-  // ParseMessage parses exactly one message from the given StringPiece. If
+  // ParseMessage parses exactly one message from the given QuicStringPiece. If
   // there is an error, the message is truncated, or the message has trailing
   // garbage then nullptr will be returned.
   static std::unique_ptr<CryptoHandshakeMessage> ParseMessage(
-      base::StringPiece in);
+      QuicStringPiece in);
 
   // Set callbacks to be called from the framer.  A visitor must be set, or
   // else the framer will crash.  It is acceptable for the visitor to do
   // nothing.  If this is called multiple times, only the last visitor
   // will be used.  |visitor| will be owned by the framer.
   void set_visitor(CryptoFramerVisitorInterface* visitor) {
     visitor_ = visitor;
   }
 
   QuicErrorCode error() const { return error_; }
   const std::string& error_detail() const { return error_detail_; }
 
   // Processes input data, which must be delivered in order. Returns
   // false if there was an error, and true otherwise.
-  bool ProcessInput(base::StringPiece input);
+  bool ProcessInput(QuicStringPiece input);
 
   // Returns the number of bytes of buffered input data remaining to be
   // parsed.
   size_t InputBytesRemaining() const { return buffer_.length(); }
 
   // Returns a new QuicData owned by the caller that contains a serialized
   // |message|, or nullptr if there was an error.
   static QuicData* ConstructHandshakeMessage(
       const CryptoHandshakeMessage& message);
 
  private:
   // Clears per-message state.  Does not clear the visitor.
   void Clear();
 
   // Process does does the work of |ProcessInput|, but returns an error code,
   // doesn't set error_ and doesn't call |visitor_->OnError()|.
-  QuicErrorCode Process(base::StringPiece input);
+  QuicErrorCode Process(QuicStringPiece input);
 
   static bool WritePadTag(QuicDataWriter* writer,
                           size_t pad_length,
                           uint32_t* end_offset);
 
   // Represents the current state of the parsing state machine.
   enum CryptoFramerState {
     STATE_READING_TAG,
     STATE_READING_NUM_ENTRIES,
     STATE_READING_TAGS_AND_LENGTHS,
@@ skipping 17 matching lines @@
   // tags_and_lengths_ contains the tags that are currently being parsed and
   // their lengths.
   std::vector<std::pair<QuicTag, size_t>> tags_and_lengths_;
   // Cumulative length of all values in the message currently being parsed.
   size_t values_len_;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_CRYPTO_CRYPTO_FRAMER_H_