win: Capture some memory pointed at by context

snapshot/win/exception_snapshot_win.h

Index: snapshot/win/exception_snapshot_win.h
diff --git a/snapshot/win/exception_snapshot_win.h b/snapshot/win/exception_snapshot_win.h
index 1688b12592e2fa34ed8b1db53d8753b2ee11cfff..a81786822c93641946c99d171b773a72286fe3da 100644
--- a/snapshot/win/exception_snapshot_win.h
+++ b/snapshot/win/exception_snapshot_win.h
@@ -23,6 +23,7 @@
 #include "snapshot/cpu_context.h"
 #include "snapshot/exception_snapshot.h"
 #include "util/misc/initialization_state_dcheck.h"
+#include "util/stdlib/pointer_container.h"
 #include "util/win/address_types.h"
 #include "util/win/process_structs.h"
 
@@ -32,6 +33,8 @@ class ProcessReaderWin;
 
 namespace internal {
 
+class MemorySnapshotWin;
+
 class ExceptionSnapshotWin final : public ExceptionSnapshot {
  public:
   ExceptionSnapshotWin();
@@ -60,6 +63,7 @@ class ExceptionSnapshotWin final : public ExceptionSnapshot {
   uint32_t ExceptionInfo() const override;
   uint64_t ExceptionAddress() const override;
   const std::vector<uint64_t>& Codes() const override;
+  std::vector<const MemorySnapshot*> ExtraMemory() const override;
 
  private:
   template <class ExceptionRecordType,
@@ -77,6 +81,7 @@ class ExceptionSnapshotWin final : public ExceptionSnapshot {
 #endif
   CPUContext context_;
   std::vector<uint64_t> codes_;
+  PointerVector<internal::MemorySnapshotWin> extra_memory_;
   uint64_t thread_id_;
   uint64_t exception_address_;
   uint32_t exception_flags_;