Cleanup interface descriptors to reflect that vectors are part of stores.

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 d14f054dbd86586d3ce3bbe9b55e7dc5ee438fbf..d962ef95c5a0bf8ce0ccb9804572df0814c0604c 100644
--- a/src/x87/interface-descriptors-x87.cc
+++ b/src/x87/interface-descriptors-x87.cc
@@ -30,13 +30,9 @@ const Register LoadWithVectorDescriptor::VectorRegister() { return ebx; }
 const Register StoreDescriptor::ReceiverRegister() { return edx; }
 const Register StoreDescriptor::NameRegister() { return ecx; }
 const Register StoreDescriptor::ValueRegister() { return eax; }
+const Register StoreDescriptor::SlotRegister() { return edi; }
 
-
-const Register VectorStoreICTrampolineDescriptor::SlotRegister() { return edi; }
-
-
-const Register VectorStoreICDescriptor::VectorRegister() { return ebx; }
-
+const Register StoreWithVectorDescriptor::VectorRegister() { return ebx; }
 
 const Register VectorStoreTransitionDescriptor::SlotRegister() {
   return no_reg;