[turbofan] Replace MachineSemantic with Type in simplified lowering.

src/compiler/simplified-lowering.h

Index: src/compiler/simplified-lowering.h
diff --git a/src/compiler/simplified-lowering.h b/src/compiler/simplified-lowering.h
index c24408c7c2dfbe3d72c3ad3ebba0b83c7fddb25b..d71dcc23b7bbbe098246a442f83adb9c257a4f7f 100644
--- a/src/compiler/simplified-lowering.h
+++ b/src/compiler/simplified-lowering.h
@@ -31,9 +31,9 @@ class SimplifiedLowering final {
 
   void LowerAllNodes();
 
-  // TODO(turbofan): The output_type can be removed once the result of the
+  // TODO(turbofan): The representation can be removed once the result of the
   // representation analysis is stored in the node bounds.
-  void DoLoadBuffer(Node* node, MachineType output_type,
+  void DoLoadBuffer(Node* node, MachineRepresentation rep,
                     RepresentationChanger* changer);
   void DoStoreBuffer(Node* node);
   void DoObjectIsNumber(Node* node);