[stubs] Introduce ToNameStub to implement %_ToName.

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 da0ce13bb43efe132d846eb4647675145033a185..460c9eb3d335b97db83962f30765d04170653905 100644
--- a/src/arm64/interface-descriptors-arm64.cc
+++ b/src/arm64/interface-descriptors-arm64.cc
@@ -116,6 +116,10 @@ const Register ToStringDescriptor::ReceiverRegister() { return x0; }
 
 
 // static
+const Register ToNameDescriptor::ReceiverRegister() { return x0; }
+
+
+// static
 const Register ToObjectDescriptor::ReceiverRegister() { return x0; }