Dump INFO CODE_ID containing Build ID in Linux dump_syms

src/common/linux/file_id.h

 // Copyright (c) 2006, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 55 matching lines @@
   static bool ElfFileIdentifierFromMappedFile(
       const void* base,
       wasteful_vector<uint8_t>& identifier);
 
   // Convert the |identifier| data to a string.  The string will
   // be formatted as a UUID in all uppercase without dashes.
   // (e.g., 22F065BBFC9C49F780FE26A7CEBD7BCE).
   static std::string ConvertIdentifierToUUIDString(
       const wasteful_vector<uint8_t>& identifier);
 
+  // Convert the entire |identifier| data to a hex string.
+  static std::string ConvertIdentifierToString(
+      const wasteful_vector<uint8_t>& identifier);
+
  private:
   // Storage for the path specified
   std::string path_;
 };
 
 }  // namespace google_breakpad
 
 #endif  // COMMON_LINUX_FILE_ID_H__