[ic] Extract load IC proto array handlers handling to a separate stub.

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 2bddece3544caa5f12047621647803a724b153de..70b110af5b263b4568ea546444123df395b156d3 100644
--- a/src/x87/interface-descriptors-x87.cc
+++ b/src/x87/interface-descriptors-x87.cc
@@ -31,6 +31,7 @@ const Register LoadDescriptor::SlotRegister() { return eax; }
 
 const Register LoadWithVectorDescriptor::VectorRegister() { return ebx; }
 
+const Register LoadICProtoArrayDescriptor::HandlerRegister() { return edi; }
 
 const Register StoreDescriptor::ReceiverRegister() { return edx; }
 const Register StoreDescriptor::NameRegister() { return ecx; }