[turbofan] Reduce code duplication in JSTypedLowering somewhat.

src/compiler/js-typed-lowering.h

Index: src/compiler/js-typed-lowering.h
diff --git a/src/compiler/js-typed-lowering.h b/src/compiler/js-typed-lowering.h
index f5ae38c491cbc35d0a85de10455313a8bd6ad221..35c397fb888863d34192c75ffa42213620e3da3c 100644
--- a/src/compiler/js-typed-lowering.h
+++ b/src/compiler/js-typed-lowering.h
@@ -48,9 +48,6 @@ class JSTypedLowering final : public AdvancedReducer {
   friend class JSBinopReduction;
 
   Reduction ReduceJSAdd(Node* node);
-  Reduction ReduceJSModulus(Node* node);
-  Reduction ReduceJSBitwiseOr(Node* node);
-  Reduction ReduceJSMultiply(Node* node);
   Reduction ReduceJSComparison(Node* node);
   Reduction ReduceJSLoadNamed(Node* node);
   Reduction ReduceJSLoadProperty(Node* node);
@@ -83,11 +80,9 @@ class JSTypedLowering final : public AdvancedReducer {
   Reduction ReduceLoadField(Node* node);
   Reduction ReduceNumberRoundop(Node* node);
   Reduction ReduceSelect(Node* node);
-  Reduction ReduceJSSubtract(Node* node);
-  Reduction ReduceJSDivide(Node* node);
-  Reduction ReduceInt32Binop(Node* node, const Operator* intOp);
-  Reduction ReduceUI32Shift(Node* node, Signedness signedness,
-                            const Operator* shift_op);
+  Reduction ReduceNumberBinop(Node* node);
+  Reduction ReduceInt32Binop(Node* node);
+  Reduction ReduceUI32Shift(Node* node, Signedness signedness);
 
   Factory* factory() const;
   Graph* graph() const;