Eliminate extended mode, and other modes clean-up

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index bd27d42bf7335d1a2c4e777bcaa22888478dd3e1..bf8cc684fad3ad37ec5db996771d7db931d07db7 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -4262,16 +4262,15 @@ MaybeObject* Heap::AllocateArgumentsObject(Object* callee, int length) {
   JSObject* boilerplate;
   int arguments_object_size;
   bool strict_mode_callee = callee->IsJSFunction() &&
-      !JSFunction::cast(callee)->shared()->is_sloppy_mode();
+      JSFunction::cast(callee)->shared()->strict_mode() == STRICT;
   if (strict_mode_callee) {
     boilerplate =
-        isolate()->context()->native_context()->
-            strict_mode_arguments_boilerplate();
-    arguments_object_size = kArgumentsObjectSizeStrict;
+        isolate()->context()->native_context()->strict_arguments_boilerplate();
+    arguments_object_size = kStrictArgumentsObjectSize;
   } else {
     boilerplate =
-        isolate()->context()->native_context()->arguments_boilerplate();
-    arguments_object_size = kArgumentsObjectSize;
+        isolate()->context()->native_context()->sloppy_arguments_boilerplate();
+    arguments_object_size = kSloppyArgumentsObjectSize;
   }
 
   // Check that the size of the boilerplate matches our