Add MachOImageReader and its test

util/misc/uuid.h

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 18 matching lines @@
 //! A %UUID is a unique 128-bit number specified by RFC 4122.
 //!
 //! This is a standard-layout structure.
 struct UUID {
   //! \brief Initializes the %UUID to zero.
   UUID();
 
   //! \copydoc InitializeFromBytes()
   explicit UUID(const uint8_t* bytes);
 
+  bool operator==(const UUID& that) const;
+  bool operator!=(const UUID& that) const { return !operator==(that); }
+
   //! \brief Initializes the %UUID from a sequence of bytes.
   //!
   //! \a bytes is taken as a %UUID laid out in big-endian format in memory. On
   //! little-endian machines, appropriate byte-swapping will be performed to
   //! initialize an object’s data members.
   //!
   //! \param[in] bytes A buffer of exactly 16 bytes that will be assigned to the
   //!     %UUID.
   void InitializeFromBytes(const uint8_t* bytes);
 
   //! \brief Formats the %UUID per RFC 4122 §3.
   //!
   //! \return A string of the form `"00112233-4455-6677-8899-aabbccddeeff"`.
   std::string ToString() const;
 
   // These fields are laid out according to RFC 4122 §4.1.2.
   uint32_t data_1;
   uint16_t data_2;
   uint16_t data_3;
   uint8_t data_4[2];
   uint8_t data_5[6];
 };
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_UTIL_MISC_UUID_H_