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

net/spdy/hpack/hpack_decoder.h

 // 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.
 
 #ifndef NET_SPDY_HPACK_HPACK_DECODER_H_
 #define NET_SPDY_HPACK_HPACK_DECODER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <memory>
-#include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "net/base/net_export.h"
 #include "net/spdy/hpack/hpack_decoder_interface.h"
 #include "net/spdy/hpack/hpack_header_table.h"
 #include "net/spdy/hpack/hpack_input_stream.h"
+#include "net/spdy/platform/api/spdy_string.h"
 #include "net/spdy/platform/api/spdy_string_piece.h"
 #include "net/spdy/spdy_headers_handler_interface.h"
 #include "net/spdy/spdy_protocol.h"
 
 // An HpackDecoder decodes header sets as outlined in
 // http://tools.ietf.org/html/rfc7541.
 
 namespace net {
 
 namespace test {
@@ skipping 78 matching lines @@
                       SpdyStringPiece* next_name);
   bool DecodeNextStringLiteral(HpackInputStream* input_stream,
                                bool is_header_key,  // As distinct from a value.
                                SpdyStringPiece* output);
 
   HpackHeaderTable header_table_;
 
   // TODO(jgraettinger): Buffer for headers data, and storage for the last-
   // processed headers block. Both will be removed with the switch to
   // SpdyHeadersHandlerInterface.
-  std::string headers_block_buffer_;
+  SpdyString headers_block_buffer_;
   SpdyHeaderBlock decoded_block_;
 
   // Scratch space for storing decoded literals.
-  std::string key_buffer_, value_buffer_;
+  SpdyString key_buffer_, value_buffer_;
 
   // If non-NULL, handles decoded headers.
   SpdyHeadersHandlerInterface* handler_;
   size_t total_header_bytes_;
 
   // How much encoded data this decoder is willing to buffer.
   size_t max_decode_buffer_size_bytes_ = 32 * 1024;  // 32 KB
 
   // Total bytes have been removed from headers_block_buffer_.
   // Its value is updated during incremental decoding.
@@ skipping 12 matching lines @@
 
   // Saved value of --chromium_http2_flag_add_hpack_incremental_decode.
   bool incremental_decode_;
 
   DISALLOW_COPY_AND_ASSIGN(HpackDecoder);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_HPACK_HPACK_DECODER_H_