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

src/codegen.cc

Index: src/codegen.cc
===================================================================
--- src/codegen.cc	(revision 3149)
+++ src/codegen.cc	(working copy)
@@ -551,4 +551,20 @@
 }
 
 
+bool ApiGetterEntryStub::GetCustomCache(Code** code_out) {
+  Object* cache = info()->load_stub_cache();
+  if (cache->IsUndefined()) {
+    return false;
+  } else {
+    *code_out = Code::cast(cache);
+    return true;
+  }
+}
+
+
+void ApiGetterEntryStub::SetCustomCache(Code* value) {
+  info()->set_load_stub_cache(value);
+}
+
+
 } }  // namespace v8::internal