Cleanup unnecessary duplication of runtime functions.

src/runtime/runtime-scopes.cc

Index: src/runtime/runtime-scopes.cc
diff --git a/src/runtime/runtime-scopes.cc b/src/runtime/runtime-scopes.cc
index 0d69d0a03cdf9534ed88a1275316dade496ce8c6..ff7e783393081cbe731a8d5f265a5b0fa852b773 100644
--- a/src/runtime/runtime-scopes.cc
+++ b/src/runtime/runtime-scopes.cc
@@ -1082,7 +1082,16 @@ RUNTIME_FUNCTION(Runtime_StoreLookupSlot) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_GetArgumentsProperty) {
+RUNTIME_FUNCTION(Runtime_ArgumentsLength) {
+  SealHandleScope shs(isolate);
+  DCHECK(args.length() == 0);
+  JavaScriptFrameIterator it(isolate);
+  JavaScriptFrame* frame = it.frame();
+  return Smi::FromInt(frame->GetArgumentsLength());
+}
+
+
+RUNTIME_FUNCTION(Runtime_Arguments) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, raw_key, 0);
@@ -1157,20 +1166,5 @@ RUNTIME_FUNCTION(Runtime_GetArgumentsProperty) {
       Object::GetProperty(isolate->initial_object_prototype(), key));
   return *result;
 }
-
-
-RUNTIME_FUNCTION(Runtime_ArgumentsLength) {
-  SealHandleScope shs(isolate);
-  DCHECK(args.length() == 0);
-  JavaScriptFrameIterator it(isolate);
-  JavaScriptFrame* frame = it.frame();
-  return Smi::FromInt(frame->GetArgumentsLength());
-}
-
-
-RUNTIME_FUNCTION(Runtime_Arguments) {
-  SealHandleScope shs(isolate);
-  return __RT_impl_Runtime_GetArgumentsProperty(args, isolate);
-}
 }  // namespace internal
 }  // namespace v8