Add MinidumpRVAListWriter and test

minidump/minidump_extensions.h

Index: minidump/minidump_extensions.h
diff --git a/minidump/minidump_extensions.h b/minidump/minidump_extensions.h
index f88b0cded7f6f6d1e8d7810a88e225a149240b3e..70539ebed0343b7ded7fdde1d5e6ba58f605291b 100644
--- a/minidump/minidump_extensions.h
+++ b/minidump/minidump_extensions.h
@@ -296,6 +296,15 @@ struct MinidumpModuleCodeViewRecordPDB70 {
   uint8_t pdb_name[1];
 };
 
+//! \brief A list of ::RVA pointers.
+struct __attribute__((packed, aligned(4))) MinidumpRVAList {
+  //! \brief The number of children present in the #children array.
+  uint32_t count;
+
+  //! \brief Pointers to other structures in the minidump file.
+  RVA children[0];
+};
+
 //! \brief A list of MINIDUMP_LOCATION_DESCRIPTOR objects.
 struct __attribute__((packed, aligned(4))) MinidumpLocationDescriptorList {
   //! \brief The number of children present in the #children array.