Move input/output counts directly into Operators, simplying OperatorProperties.

test/cctest/compiler/simplified-graph-builder.cc

Index: test/cctest/compiler/simplified-graph-builder.cc
diff --git a/test/cctest/compiler/simplified-graph-builder.cc b/test/cctest/compiler/simplified-graph-builder.cc
index 03b4b225555634f62793b5c7171e1f8d14897969..03a7887671bb3eb3fd82de9b7bd84d76c755ace6 100644
--- a/test/cctest/compiler/simplified-graph-builder.cc
+++ b/test/cctest/compiler/simplified-graph-builder.cc
@@ -76,10 +76,8 @@ Node* SimplifiedGraphBuilder::MakeNode(const Operator* op,
     if (has_effect) {
       effect_ = result;
     }
-    if (OperatorProperties::HasControlOutput(result->op())) {
-      // This graph builder does not support control flow.
-      UNREACHABLE();
-    }
+    // This graph builder does not support control flow.
+    CHECK_EQ(0, op->ControlOutputCount());
   }
 
   return result;