snapshot: Make destructors of interface classes public and virtual

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,
 // 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_EXCEPTION_SNAPSHOT_H_
 #define CRASHPAD_SNAPSHOT_EXCEPTION_SNAPSHOT_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 namespace crashpad {
 
 struct CPUContext;
 
 //! \brief An abstract interface to a snapshot representing an exception that a
 //!     snapshot process sustained and triggered the snapshot being taken.
 class ExceptionSnapshot {
  public:
+  virtual ~ExceptionSnapshot() {}
+
   //! \brief Returns a CPUContext object corresponding to the exception thread’s
   //!     CPU context at the time of the exception.
   //!
   //! The caller does not take ownership of this object, it is scoped to the
   //! lifetime of the ThreadSnapshot object that it was obtained from.
   virtual const CPUContext* Context() const = 0;
 
   //! \brief Returns the thread identifier of the thread that triggered the
   //!     exception.
   //!
@@ skipping 39 matching lines @@
   //! The precise interpretation of these codes is specific to the snapshot
   //! operating system. These codes may provide a duplicate of information
   //! available elsewhere, they may extend information available elsewhere, or
   //! they may not be present at all. In this case, an empty vector will be
   //! returned.
   //!
   //! 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;
-
- protected:
-  ~ExceptionSnapshot() {}
 };
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_SNAPSHOT_EXCEPTION_SNAPSHOT_H_