win: Implement exception snapshot

snapshot/exception_snapshot.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 35 matching lines @@
 
   //! \brief Returns the top-level exception code identifying the exception.
   //!
   //! This is an operating system-specific value.
   //!
   //! For Mac OS X, this will be an \ref EXC_x "EXC_*" exception type, such as
   //! `EXC_BAD_ACCESS`. `EXC_CRASH` will not appear here for exceptions
   //! processed as `EXC_CRASH` when generated from another preceding exception:
   //! the original exception code will appear instead. The exception type as it
   //! was received will appear at index 0 of Codes().
+  //!
+  //! For Windows, this will be an \ref EXCEPTION_x "EXCEPTION_*" exception type
+  //! such as `EXCEPTION_ACCESS_VIOLATION`.
   virtual uint32_t Exception() const = 0;
 
   //! \brief Returns the second-level exception code identifying the exception.
   //!
   //! This is an operating system-specific value.
   //!
   //! For Mac OS X, this will be the value of the exception code at index 0 as
   //! received by a Mach exception handler, except:
   //!  * For `EXC_CRASH` exceptions generated from another preceding exception,
   //!    the original exception code will appear here, not the code as received
@@ skipping 25 matching lines @@
   //!
   //! For Mac OS X, this will be a vector containing the original exception type
   //! and the values of `code[0]` and `code[1]` as received by a Mach exception
   //! handler.
   virtual const std::vector<uint64_t>& Codes() const = 0;
 };
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_SNAPSHOT_EXCEPTION_SNAPSHOT_H_