Add SpdyString alias for std::string in net/spdy.

net/spdy/hpack/hpack_huffman_decoder.cc

 // Copyright 2016 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.
 //
 // Decoder for strings encoded using the HPACK Huffman Code (see
 // https://httpwg.github.io/specs/rfc7541.html#huffman.code).
 //
 // This implementation is inspired by the One-Shift algorithm described in
 // "On the Implementation of Minimum Redundancy Prefix Codes", by Alistair
 // Moffat and Andrew Turpin, 1997.
@@ skipping 285 matching lines @@
   DCHECK_LT(canonical, 256u);
   return static_cast<char>(kCanonicalToSymbol[canonical]);
 }
 
 // TODO(jamessynge): Maybe further refactorings, including just passing in a
 // SpdyStringPiece instead of an HpackInputStream, thus avoiding the PeekBits
 // calls, and also allowing us to separate the code into portions dealing with
 // long strings, and a later portion dealing with the last few bytes of strings.
 // TODO(jamessynge): Determine if that is worth it by adding some counters to
 // measure the distribution of string sizes seen in practice.
-bool HpackHuffmanDecoder::DecodeString(HpackInputStream* in, std::string* out) {
+bool HpackHuffmanDecoder::DecodeString(HpackInputStream* in, SpdyString* out) {
   out->clear();
 
   // Load |bits| with the leading bits of the input stream, left justified
   // (i.e. the bits of the first byte are the high-order bits of |bits|,
   // and the bits of the fourth byte are the low-order bits of |bits|).
   // |peeked_success| if there are more bits in |*in| (i.e. the encoding
   // of the string to be decoded is more than 4 bytes).
 
   auto bits_available_and_bits = in->InitializePeekBits();
   HuffmanCodeLength bits_available = bits_available_and_bits.first;
@@ skipping 74 matching lines @@
       // Get some more bits for decoding (up to 8). |peeked_success| is true
       // if we got any bits.
       peeked_success = in->PeekBits(&bits_available, &bits);
     }
     DLOG_IF(WARNING, (VLOG_IS_ON(2) && bits_available < 32 && !peeked_success))
         << "no more peeking possible";
   }
 }
 
 }  // namespace net