Track which entries in the ObjectPool are native entries, and reset them when loading a precompiled…

runtime/vm/assembler_arm64.h

Index: runtime/vm/assembler_arm64.h
diff --git a/runtime/vm/assembler_arm64.h b/runtime/vm/assembler_arm64.h
index dbb4a3b5fff371d1acfec0355507be935859a97c..6a70ff884b8f2de210d5bd3b237e943235e6ef11 100644
--- a/runtime/vm/assembler_arm64.h
+++ b/runtime/vm/assembler_arm64.h
@@ -1288,6 +1288,7 @@ class Assembler : public ValueObject {
   intptr_t FindImmediate(int64_t imm);
   bool CanLoadFromObjectPool(const Object& object) const;
   void LoadExternalLabel(Register dst, const ExternalLabel* label);
+  void LoadNativeEntry(Register dst, const ExternalLabel* label);
   void LoadExternalLabelFixed(Register dst,
                               const ExternalLabel* label,
                               Patchability patchable);