[Interpreter] Introduce IncStub and DecStub.

src/ia32/interface-descriptors-ia32.cc

Index: src/ia32/interface-descriptors-ia32.cc
diff --git a/src/ia32/interface-descriptors-ia32.cc b/src/ia32/interface-descriptors-ia32.cc
index b14ce6b74f2816336723fceb9b7b0c703e2638a7..320e31d81be6da9fdb60c1359ee36b140abf9326 100644
--- a/src/ia32/interface-descriptors-ia32.cc
+++ b/src/ia32/interface-descriptors-ia32.cc
@@ -321,6 +321,11 @@ void BinaryOpWithAllocationSiteDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
+void CountOpDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {eax};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
 
 void StringAddDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {