[stubs] Introduce ToNameStub to implement %_ToName.

src/interface-descriptors.cc

Index: src/interface-descriptors.cc
diff --git a/src/interface-descriptors.cc b/src/interface-descriptors.cc
index 94ed7020c3f7f6bf55d0c341b76e8cd24005b374..ced689dcddaca6308e80b8ade14b6544645e5d8f 100644
--- a/src/interface-descriptors.cc
+++ b/src/interface-descriptors.cc
@@ -216,6 +216,13 @@ void ToStringDescriptor::InitializePlatformSpecific(
 }
 
 
+void ToNameDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {ReceiverRegister()};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
 void ToObjectDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {ReceiverRegister()};