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

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 086fd85137ee46bdc7595ae2465523e465432cd3..740ea8a85b668425c01c0e98c9afc64a7219d5ee 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -2891,8 +2891,8 @@ void LCodeGen::DoReturn(LReturn* instr) {
 template <class T>
 void LCodeGen::EmitVectorLoadICRegisters(T* instr) {
   Register vector_register = ToRegister(instr->temp_vector());
-  Register slot_register = VectorLoadICDescriptor::SlotRegister();
-  DCHECK(vector_register.is(VectorLoadICDescriptor::VectorRegister()));
+  Register slot_register = LoadWithVectorDescriptor::SlotRegister();
+  DCHECK(vector_register.is(LoadWithVectorDescriptor::VectorRegister()));
   DCHECK(slot_register.is(rax));
 
   AllowDeferredHandleDereference vector_structure_check;