Adds a QuicUtil::HexDump method that provides better debug output of binary data.

net/quic/quic_utils.h

 // Copyright (c) 2012 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.
 //
 // Some helpers for quic.
 
 #ifndef NET_QUIC_QUIC_UTILS_H_
 #define NET_QUIC_QUIC_UTILS_H_
 
 #include <stddef.h>
@@ skipping 125 matching lines @@
   // This converts 'num' bytes of binary to a 2*'num'-character hexadecimal
   // representation. Return value: 2*'num' characters of ascii std::string.
   static std::string HexEncode(const char* data, size_t length);
   static std::string HexEncode(base::StringPiece data);
 
   // This converts 2*'num' hexadecimal characters to 'num' binary data.
   // Return value: 'num' bytes of binary data (via the 'to' argument).
   static std::string HexDecode(const char* data, size_t length);
   static std::string HexDecode(base::StringPiece data);
 
-  // Converts binary data into an ASCII string. Each character in the resulting
-  // string is preceeded by a space, and replaced with a '.' if not printable.
-  static std::string BinaryToAscii(base::StringPiece binary);
+  // Returns a std::string containing hex and ASCII representations of |binary|,
+  // side-by-side in the style of hexdump. Non-printable characters will be
+  // printed as '.' in the ASCII output.
+  // For example:
+  // "48 65 6c 6c 6f 2c 20 51 55 49 43 21 01 02 03 04  |Hello, QUIC!....|"
+  static std::string HexDump(base::StringPiece binary_data);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(QuicUtils);
 };
 
 // Utility function that returns an QuicIOVector object wrapped around |str|.
 // |str|'s data is stored in |iov|.
 inline QuicIOVector MakeIOVector(base::StringPiece str, struct iovec* iov) {
   iov->iov_base = const_cast<char*>(str.data());
   iov->iov_len = static_cast<size_t>(str.size());
   QuicIOVector quic_iov(iov, 1, str.size());
   return quic_iov;
 }
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_UTILS_H_