Change CryptoHandshakeMessage::GetTaglist to tag a QuicTagVector*

net/quic/core/crypto/crypto_handshake_message.h

 // Copyright (c) 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_CRYPTO_HANDSHAKE_MESSAGE_H_
 #define NET_QUIC_CORE_CRYPTO_CRYPTO_HANDSHAKE_MESSAGE_H_
 
 #include <cstddef>
 #include <cstdint>
 #include <memory>
@@ skipping 55 matching lines @@
 
   const QuicTagValueMap& tag_value_map() const { return tag_value_map_; }
 
   void SetStringPiece(QuicTag tag, QuicStringPiece value);
 
   // Erase removes a tag/value, if present, from the message.
   void Erase(QuicTag tag);
 
   // GetTaglist finds an element with the given tag containing zero or more
   // tags. If such a tag doesn't exist, it returns an error code. Otherwise it
-  // sets |out_tags| and |out_len| to point to the array of tags and returns
-  // QUIC_NO_ERROR.  The array points into the CryptoHandshakeMessage and is
-  // valid only for as long as the CryptoHandshakeMessage exists and is not
-  // modified.
-  QuicErrorCode GetTaglist(QuicTag tag,
-                           const QuicTag** out_tags,
-                           size_t* out_len) const;
+  // populates |out_tags| with the tags and returns QUIC_NO_ERROR.
+  QuicErrorCode GetTaglist(QuicTag tag, QuicTagVector* out_tags) const;
 
   bool GetStringPiece(QuicTag tag, QuicStringPiece* out) const;
   bool HasStringPiece(QuicTag tag) const;
 
   // GetNthValue24 interprets the value with the given tag to be a series of
   // 24-bit, length prefixed values and it returns the subvalue with the given
   // index.
   QuicErrorCode GetNthValue24(QuicTag tag,
                               unsigned index,
                               QuicStringPiece* out) const;
@@ skipping 37 matching lines @@
   size_t minimum_size_;
 
   // The serialized form of the handshake message. This member is constructed
   // lasily.
   mutable std::unique_ptr<QuicData> serialized_;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_CRYPTO_CRYPTO_HANDSHAKE_MESSAGE_H_