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

snapshot/mac/system_snapshot_mac.cc

 // 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.
 
-#include "snapshot/system_snapshot_mac.h"
+#include "snapshot/mac/system_snapshot_mac.h"
 
 #include <sys/sysctl.h>
 #include <sys/types.h>
 #include <sys/utsname.h>
 #include <time.h>
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "snapshot/cpu_context.h"
+#include "snapshot/mac/process_reader.h"
 #include "util/mac/mac_util.h"
-#include "util/mac/process_reader.h"
 #include "util/numeric/in_range_cast.h"
 
 namespace crashpad {
 
 namespace {
 
 template <typename T>
 T ReadIntSysctlByName(const char* name, T default_value) {
   T value;
   size_t value_len = sizeof(value);
@@ skipping 352 matching lines @@
   } else {
     *daylight_name = tzname[0];
     *dst_status = kDoesNotObserveDaylightSavingTime;
     *standard_offset_seconds = local.tm_gmtoff;
     *daylight_offset_seconds = local.tm_gmtoff;
   }
 }
 
 }  // namespace internal
 }  // namespace crashpad