Implemented specialized stubs for API getters. This includes a number...

src/runtime.cc

Index: src/runtime.cc
===================================================================
--- src/runtime.cc	(revision 3149)
+++ src/runtime.cc	(working copy)
@@ -4797,6 +4797,12 @@
 }
 
 
+static Object* Runtime_PromoteScheduledException(Arguments args) {
+  ASSERT_EQ(0, args.length());
+  return Top::PromoteScheduledException();
+}
+
+
 static Object* Runtime_ThrowReferenceError(Arguments args) {
   HandleScope scope;
   ASSERT(args.length() == 1);
@@ -7758,6 +7764,13 @@
 }
 
 
+static Object* Runtime_DeleteHandleScopeExtensions(Arguments args) {
+  ASSERT(args.length() == 0);
+  HandleScope::DeleteExtensions();
+  return Heap::undefined_value();
+}
+
+
 #ifdef DEBUG
 // ListNatives is ONLY used by the fuzz-natives.js in debug mode
 // Exclude the code in release mode.