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

net/spdy/hpack/hpack_input_stream.cc

 // Copyright 2014 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.
 
 #include "net/spdy/hpack/hpack_input_stream.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "net/spdy/hpack/hpack_huffman_decoder.h"
 #include "net/spdy/spdy_bug_tracker.h"
 
 namespace net {
 
-using std::string;
-
 HpackInputStream::HpackInputStream(SpdyStringPiece buffer)
     : buffer_(buffer),
       bit_offset_(0),
       parsed_bytes_(0),
       parsed_bytes_current_(0),
       need_more_data_(false) {}
 
 HpackInputStream::~HpackInputStream() {}
 
 bool HpackInputStream::HasMoreData() const {
@@ skipping 101 matching lines @@
     need_more_data_ = true;
     return false;
   }
 
   *str = SpdyStringPiece(buffer_.data(), size);
   buffer_.remove_prefix(size);
   parsed_bytes_current_ += size;
   return true;
 }
 
-bool HpackInputStream::DecodeNextHuffmanString(string* str) {
+bool HpackInputStream::DecodeNextHuffmanString(SpdyString* str) {
   uint32_t encoded_size = 0;
   if (!DecodeNextUint32(&encoded_size)) {
     if (!need_more_data_) {
       DVLOG(1) << "HpackInputStream::DecodeNextHuffmanString "
                << "unable to decode size";
     }
     return false;
   }
 
   if (encoded_size > buffer_.size()) {
@@ skipping 93 matching lines @@
 
 bool HpackInputStream::NeedMoreData() const {
   return need_more_data_;
 }
 
 void HpackInputStream::MarkCurrentPosition() {
   parsed_bytes_ = parsed_bytes_current_;
 }
 
 }  // namespace net