Revert of Rework CallApi*Stubs.

src/x87/interface-descriptors-x87.cc

Index: src/x87/interface-descriptors-x87.cc
diff --git a/src/x87/interface-descriptors-x87.cc b/src/x87/interface-descriptors-x87.cc
index 349364bf4e4a224738658147a0efae4e951bdbd2..5cf27ac7f3b8179f36395a198ded6f57cedba380 100644
--- a/src/x87/interface-descriptors-x87.cc
+++ b/src/x87/interface-descriptors-x87.cc
@@ -387,13 +387,27 @@
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
-void ApiCallbackDescriptorBase::InitializePlatformSpecific(
+
+void ApiFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       edi,  // callee
       ebx,  // call_data
       ecx,  // holder
       edx,  // api_function_address
+      eax,  // actual number of arguments
+  };
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void ApiAccessorDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {
+      edi,  // callee
+      ebx,  // call_data
+      ecx,  // holder
+      edx,  // api_function_address
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }