Create snapshot/mac and move some files from snapshot and util to there

util/mac/process_types/traits.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,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// This file is intended to be included multiple times in the same translation
-// unit, so #include guards are intentionally absent.
-//
-// This file is included by util/mac/process_types.h and
-// util/mac/process_types/internal.h to produce traits class definitions.
-
-// Things that #include this file should #undef
-// DECLARE_PROCESS_TYPE_TRAITS_CLASS before #including this file again and after
-// the last #include of this file.
-//
-// |Reserved| is used for padding fields that may be zero-length, and thus
-// __VA_ARGS__, which is intended to set the alignment of the 64-bit types, is
-// not used for that typedef.
-#define DECLARE_PROCESS_TYPE_TRAITS_CLASS(traits_name, lp_bits, ...) \
-  namespace crashpad {                                                  \
-  namespace process_types {                                          \
-  namespace internal {                                               \
-  struct Traits##traits_name {                                       \
-    typedef int##lp_bits##_t Long __VA_ARGS__;                       \
-    typedef uint##lp_bits##_t ULong __VA_ARGS__;                     \
-    typedef uint##lp_bits##_t Pointer __VA_ARGS__;                   \
-    typedef int##lp_bits##_t IntPtr __VA_ARGS__;                     \
-    typedef uint##lp_bits##_t UIntPtr __VA_ARGS__;                   \
-    typedef Reserved64Only##lp_bits Reserved64Only;                  \
-  };                                                                 \
-  }                                                                  \
-  }                                                                  \
-  }