[stubs] Unify (and optimize) implementation of ToObject.

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 f0618ad98109626bddfa051a176ae8a27412998a..3eea0e365c8c09576b0e8a14ab63d75441a6bb19 100644
--- a/src/mips/interface-descriptors-mips.cc
+++ b/src/mips/interface-descriptors-mips.cc
@@ -95,6 +95,13 @@ void ToNumberDescriptor::InitializePlatformSpecific(
 }
 
 
+void ToObjectDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {a0};
+  data->InitializePlatformSpecific(arraysize(registers), registers, nullptr);
+}
+
+
 void NumberToStringDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {a0};