[stubs] Introduce ToNameStub to implement %_ToName.

src/mips/interface-descriptors-mips.cc

Index: src/mips/interface-descriptors-mips.cc
diff --git a/src/mips/interface-descriptors-mips.cc b/src/mips/interface-descriptors-mips.cc
index 329c277d2051200c7f594dcbdfe284409ffa7813..f845c8c1ad55a12ada5151bcceccdfc381c6c54a 100644
--- a/src/mips/interface-descriptors-mips.cc
+++ b/src/mips/interface-descriptors-mips.cc
@@ -113,6 +113,10 @@ const Register ToStringDescriptor::ReceiverRegister() { return a0; }
 
 
 // static
+const Register ToNameDescriptor::ReceiverRegister() { return a0; }
+
+
+// static
 const Register ToObjectDescriptor::ReceiverRegister() { return a0; }