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

net/spdy/hpack/hpack_huffman_decoder.h

 // 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.
 
 #ifndef NET_SPDY_HPACK_HPACK_HUFFMAN_DECODER_H_
 #define NET_SPDY_HPACK_HPACK_HUFFMAN_DECODER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
-#include <string>
-
 #include "net/base/net_export.h"
 #include "net/spdy/hpack/hpack_input_stream.h"
+#include "net/spdy/platform/api/spdy_string.h"
 
 namespace net {
 namespace test {
 class HpackHuffmanDecoderPeer;
 }  // namespace test
 
 // Declared as a class to simplify testing.
 // No instances are actually allocated.
 class NET_EXPORT_PRIVATE HpackHuffmanDecoder {
  public:
   typedef uint32_t HuffmanWord;
   typedef size_t HuffmanCodeLength;
 
   HpackHuffmanDecoder() = delete;
 
   // Decodes a string that has been encoded using the HPACK Huffman Code (see
   // https://httpwg.github.io/specs/rfc7541.html#huffman.code), reading the
   // encoded bitstream from |*in|, appending each decoded char to |*out|.
   // To avoid repeatedly growing the |*out| string, the caller should reserve
   // sufficient space in |*out| to hold decoded output.
   // DecodeString() halts when |in| runs out of input, in which case true is
   // returned. It also halts (returning false) if an invalid Huffman code
   // prefix is read.
-  static bool DecodeString(HpackInputStream* in, std::string* out);
+  static bool DecodeString(HpackInputStream* in, SpdyString* out);
 
  private:
   friend class test::HpackHuffmanDecoderPeer;
 
   // The following private methods are declared here rather than simply
   // inlined into DecodeString so that they can be tested directly.
 
   // Returns the length (in bits) of the HPACK Huffman code that starts with
   // the high bits of |value|.
   static HuffmanCodeLength CodeLengthOfPrefix(HuffmanWord value);
@@ skipping 10 matching lines @@
                                        HuffmanWord bits);
 
   // Converts a canonical symbol to the source symbol (the char in the original
   // string that was encoded).
   static char CanonicalToSource(HuffmanWord canonical);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_HPACK_HPACK_HUFFMAN_DECODER_H_