Revert of Rework CallApi*Stubs.

src/ppc/interface-descriptors-ppc.cc

Index: src/ppc/interface-descriptors-ppc.cc
diff --git a/src/ppc/interface-descriptors-ppc.cc b/src/ppc/interface-descriptors-ppc.cc
index 804536544455ab336ed14ad09b12b2af0c7b9e18..a06afa44e37d7fc0c3243b15c30f27f52e4175ae 100644
--- a/src/ppc/interface-descriptors-ppc.cc
+++ b/src/ppc/interface-descriptors-ppc.cc
@@ -380,13 +380,27 @@
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
-void ApiCallbackDescriptorBase::InitializePlatformSpecific(
+
+void ApiFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       r3,  // callee
       r7,  // call_data
       r5,  // holder
       r4,  // api_function_address
+      r6,  // actual number of arguments
+  };
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void ApiAccessorDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {
+      r3,  // callee
+      r7,  // call_data
+      r5,  // holder
+      r4,  // api_function_address
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }