Implement WaitSetDispatcher::WaitSetWaitImpl().

mojo/edk/system/memory.cc

Index: mojo/edk/system/memory.cc
diff --git a/mojo/edk/system/memory.cc b/mojo/edk/system/memory.cc
index 574210a5927e4eabb56afcd4f3194a962660038c..95f5332ab7bbfdeb6329a8cda546bdcd451fd328 100644
--- a/mojo/edk/system/memory.cc
+++ b/mojo/edk/system/memory.cc
@@ -40,6 +40,7 @@ template void CheckUserPointerWithCount<1, 1>(const void*, size_t);
 template void CheckUserPointerWithCount<4, 4>(const void*, size_t);
 template void CheckUserPointerWithCount<8, 4>(const void*, size_t);
 template void CheckUserPointerWithCount<8, 8>(const void*, size_t);
+template void CheckUserPointerWithCount<24, 8>(const void*, size_t);
 
 template <size_t alignment>
 void CheckUserPointerWithSize(const void* pointer, size_t size) {