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

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 f9fe7fc599704c3d463dbc731514accf6818070b..d22a2c1d9495ac3e19ec9ed6336a79c7fe667452 100644
--- a/src/ia32/interface-descriptors-ia32.cc
+++ b/src/ia32/interface-descriptors-ia32.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;