[Interpreter] Add CallRuntime support to the interpreter.

src/runtime/runtime.h

Index: src/runtime/runtime.h
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index a3bc2125cbbee26e86f7c628e6f8603c47c05a33..0c4763583136b9a777959fe48a9faf37790107b8 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -1166,6 +1166,9 @@ class Runtime : public AllStatic {
   // Get the intrinsic function with the given function entry address.
   static const Function* FunctionForEntry(Address ref);
 
+  // Get the runtime intrinsic function table.
+  static const Function* RuntimeFunctionTable(Isolate* isolate);
+
   MUST_USE_RESULT static MaybeHandle<Object> DeleteObjectProperty(
       Isolate* isolate, Handle<JSReceiver> receiver, Handle<Object> key,
       LanguageMode language_mode);