Fix mac after https://codereview.chromium.org/1419623003/

snapshot/handle_snapshot.h

 // Copyright 2015 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.
 
 #ifndef CRASHPAD_SNAPSHOT_HANDLE_SNAPSHOT_H_
 #define CRASHPAD_SNAPSHOT_HANDLE_SNAPSHOT_H_
 
 #include <stdint.h>
 
 #include <string>
 
 namespace crashpad {
 
 struct HandleSnapshot {
   HandleSnapshot();
   ~HandleSnapshot();
 
-  //! \brief A string representation of the handle's type.
-  std::wstring type_name;
+  //! \brief A UTF-8 string representation of the handle's type.
+  std::string type_name;
 
   //! \brief The handle's value.
   uint32_t handle;
 
   //! \brief The attributes for the handle, e.g. `OBJ_INHERIT`,
   //!     `OBJ_CASE_INSENSITIVE`, etc.
   uint32_t attributes;
 
   //! \brief The ACCESS_MASK for the handle in this process.
   //!
   //! See
   //! http://blogs.msdn.com/b/openspecification/archive/2010/04/01/about-the-access-mask-structure.aspx
   //! for more information.
   uint32_t granted_access;
 
   //! \brief The number of kernel references to the object that this handle
   //!     refers to.
   uint32_t pointer_count;
 
   //! \brief The number of open handles to the object that this handle refers
   //!     to.
   uint32_t handle_count;
 };
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_SNAPSHOT_HANDLE_SNAPSHOT_H_