[stubs] An easier way of defining a stub call interface descriptor.

src/arm64/interface-descriptors-arm64.cc

Index: src/arm64/interface-descriptors-arm64.cc
diff --git a/src/arm64/interface-descriptors-arm64.cc b/src/arm64/interface-descriptors-arm64.cc
index 2504f291ac0fa2156c3d2c7ed8c87bbfc415a807..2f3d4dbe8117c418ed265eabd950148b1709d45c 100644
--- a/src/arm64/interface-descriptors-arm64.cc
+++ b/src/arm64/interface-descriptors-arm64.cc
@@ -13,6 +13,14 @@ namespace internal {
 
 const Register CallInterfaceDescriptor::ContextRegister() { return cp; }
 
+void CallInterfaceDescriptor::DefaultInitializePlatformSpecific(
+    CallInterfaceDescriptorData* data, int register_parameter_count) {
+  const Register default_stub_registers[] = {x0, x1, x2, x3, x4};
+  CHECK_LE(static_cast<size_t>(register_parameter_count),
+           arraysize(default_stub_registers));
+  data->InitializePlatformSpecific(register_parameter_count,
+                                   default_stub_registers);
+}
 
 const Register LoadDescriptor::ReceiverRegister() { return x1; }
 const Register LoadDescriptor::NameRegister() { return x2; }
@@ -63,8 +71,6 @@ const Register MathPowIntegerDescriptor::exponent() { return x12; }
 const Register GrowArrayElementsDescriptor::ObjectRegister() { return x0; }
 const Register GrowArrayElementsDescriptor::KeyRegister() { return x3; }
 
-const Register HasPropertyDescriptor::ObjectRegister() { return x0; }
-const Register HasPropertyDescriptor::KeyRegister() { return x3; }
 
 void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {