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

snapshot/mac/thread_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/thread_snapshot_mac.h"
+#include "snapshot/mac/thread_snapshot_mac.h"
 
 #include "base/logging.h"
-#include "snapshot/cpu_context_mac.h"
-#include "util/mac/process_reader.h"
+#include "snapshot/mac/cpu_context_mac.h"
+#include "snapshot/mac/process_reader.h"
 
 namespace crashpad {
 namespace internal {
 
 ThreadSnapshotMac::ThreadSnapshotMac()
     : ThreadSnapshot(),
       context_union_(),
       context_(),
       stack_(),
       thread_id_(0),
@@ skipping 76 matching lines @@
   return priority_;
 }
 
 uint64_t ThreadSnapshotMac::ThreadSpecificDataAddress() const {
   INITIALIZATION_STATE_DCHECK_VALID(initialized_);
   return thread_specific_data_address_;
 }
 
 }  // namespace internal
 }  // namespace crashpad