Implement Function.prototype.toMethod.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 4aeef9d4558b7a59c3dcb06aa3d2d8052d022b92..a331daf574d616aa7161a7bee69f76d3adf1e90e 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -2050,6 +2050,28 @@ RUNTIME_FUNCTION(Runtime_PreventExtensions) {
 }
 
 
+RUNTIME_FUNCTION(Runtime_ToMethod) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 2);
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, fun, 0);
+  CONVERT_ARG_HANDLE_CHECKED(JSObject, home_object, 1);
+  Handle<JSFunction> clone = JSFunction::Copy(fun);
+  Handle<Symbol> home_object_symbol(isolate->heap()->home_object_symbol());
+  JSObject::SetOwnPropertyIgnoreAttributes(
+      clone,
+      home_object_symbol,
+      home_object,
+      DONT_ENUM).Assert();

[Toon Verwaest, 2014/08/21 09:02:20]

Are you using "git cl format"? This seems weirdly formatted for our
auto-format...

[Dmitry Lomov (no reviews), 2014/08/21 11:09:11]

Done.

+  return *clone;
+}
+
+
+RUNTIME_FUNCTION(Runtime_HomeObjectSymbol) {
+  DCHECK(args.length() == 0);
+  return isolate->heap()->home_object_symbol();
+}
+
+
 RUNTIME_FUNCTION(Runtime_IsExtensible) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);