[turbofan] Unify the PlainPrimitive as Number treatment.

src/compiler/js-builtin-reducer.h

Index: src/compiler/js-builtin-reducer.h
diff --git a/src/compiler/js-builtin-reducer.h b/src/compiler/js-builtin-reducer.h
index 1e61928138d1a8b90aeeebac34f0a997943c7094..2b535a5e7e7249873ed734f492c8c78f7f6a2a76 100644
--- a/src/compiler/js-builtin-reducer.h
+++ b/src/compiler/js-builtin-reducer.h
@@ -18,7 +18,6 @@ namespace compiler {
 // Forward declarations.
 class CommonOperatorBuilder;
 class JSGraph;
-class MachineOperatorBuilder;
 class SimplifiedOperatorBuilder;
 
 
@@ -30,27 +29,29 @@ class JSBuiltinReducer final : public AdvancedReducer {
   Reduction Reduce(Node* node) final;
 
  private:
-  Reduction ReduceFunctionCall(Node* node);
-  Reduction ReduceMathMax(Node* node);
-  Reduction ReduceMathImul(Node* node);
+  Reduction ReduceMathAtan(Node* node);
+  Reduction ReduceMathAtan2(Node* node);
   Reduction ReduceMathCeil(Node* node);
   Reduction ReduceMathClz32(Node* node);
   Reduction ReduceMathFloor(Node* node);
   Reduction ReduceMathFround(Node* node);
-  Reduction ReduceMathAtan(Node* node);
-  Reduction ReduceMathAtan2(Node* node);
+  Reduction ReduceMathImul(Node* node);
   Reduction ReduceMathLog(Node* node);
   Reduction ReduceMathLog1p(Node* node);
+  Reduction ReduceMathMax(Node* node);
+  Reduction ReduceMathMin(Node* node);
   Reduction ReduceMathRound(Node* node);
   Reduction ReduceMathSqrt(Node* node);
   Reduction ReduceMathTrunc(Node* node);
   Reduction ReduceStringFromCharCode(Node* node);
 
+  Node* ToNumber(Node* value);
+  Node* ToUint32(Node* value);
+
   Graph* graph() const;
   JSGraph* jsgraph() const { return jsgraph_; }
   Isolate* isolate() const;
   CommonOperatorBuilder* common() const;
-  MachineOperatorBuilder* machine() const;
   SimplifiedOperatorBuilder* simplified() const;
 
   JSGraph* const jsgraph_;