[runtime] Turn ArgumentAccessStub into FastNewSloppyArgumentsStub.

src/x64/interface-descriptors-x64.cc

Index: src/x64/interface-descriptors-x64.cc
diff --git a/src/x64/interface-descriptors-x64.cc b/src/x64/interface-descriptors-x64.cc
index d1903061430f153bd6bda473355402c814096d98..3f8cc97f81ddb7c3310874e1e7c3325cbc6b197a 100644
--- a/src/x64/interface-descriptors-x64.cc
+++ b/src/x64/interface-descriptors-x64.cc
@@ -54,11 +54,6 @@ const Register StringCompareDescriptor::LeftRegister() { return rdx; }
 const Register StringCompareDescriptor::RightRegister() { return rax; }
 
 
-const Register ArgumentsAccessNewDescriptor::function() { return rdi; }
-const Register ArgumentsAccessNewDescriptor::parameter_count() { return rcx; }
-const Register ArgumentsAccessNewDescriptor::parameter_pointer() { return rdx; }
-
-
 const Register ApiGetterDescriptor::function_address() { return r8; }
 
 
@@ -94,6 +89,12 @@ void FastNewRestParameterDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
+void FastNewSloppyArgumentsDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {rdi};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
 void FastNewStrictArgumentsDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi};