[builtins] Refactor Invoke to deal with any kind of callable.

src/execution.h

Index: src/execution.h
diff --git a/src/execution.h b/src/execution.h
index 5c25082a66e21e6baf81c9391d075db09b5b50fc..3822cbb49e7652c0d3e021b696bac97a85ff0c68 100644
--- a/src/execution.h
+++ b/src/execution.h
@@ -35,8 +35,9 @@ class Execution final : public AllStatic {
   MUST_USE_RESULT static MaybeHandle<Object> New(Handle<JSFunction> constructor,
                                                  int argc,
                                                  Handle<Object> argv[]);
-  MUST_USE_RESULT static MaybeHandle<Object> New(Handle<JSFunction> constructor,
-                                                 Handle<JSFunction> new_target,
+  MUST_USE_RESULT static MaybeHandle<Object> New(Isolate* isolate,
+                                                 Handle<Object> constructor,
+                                                 Handle<Object> new_target,
                                                  int argc,
                                                  Handle<Object> argv[]);
 
@@ -88,20 +89,6 @@ class Execution final : public AllStatic {
                                           Handle<JSFunction> fun,
                                           Handle<Object> pos,
                                           Handle<Object> is_global);
-
-  // Get a function delegate for the given non-function object.
-  // Used for support calling objects as functions.
-  MUST_USE_RESULT static MaybeHandle<JSFunction> GetFunctionDelegate(
-      Isolate* isolate, Handle<Object> object);
-
-  // Get a function delegate (or undefined) for the given non-function
-  // object. Used for support calling objects as constructors.
-  MUST_USE_RESULT static MaybeHandle<JSFunction> GetConstructorDelegate(
-      Isolate* isolate, Handle<Object> object);
-
- private:
-  MUST_USE_RESULT static Handle<String> RenderCallSite(Isolate* isolate,
-                                                       Handle<Object> object);
 };