[turbofan] Initial attempt to cleanup Node and related classes.

test/cctest/compiler/test-control-reducer.cc

Index: test/cctest/compiler/test-control-reducer.cc
diff --git a/test/cctest/compiler/test-control-reducer.cc b/test/cctest/compiler/test-control-reducer.cc
index 03aa50b376df99a8ee00224c868431503c6673a4..61dad29f11e31d0054720d6ac01e06d3426fbae8 100644
--- a/test/cctest/compiler/test-control-reducer.cc
+++ b/test/cctest/compiler/test-control-reducer.cc
@@ -52,10 +52,8 @@ static int CheckLoop(Node* node, Node* i0 = NULL, Node* i1 = NULL,
 
 
 bool IsUsedBy(Node* a, Node* b) {
-  for (UseIter i = a->uses().begin(); i != a->uses().end(); ++i) {
-    if (b == *i) return true;
-  }
-  return false;
+  auto const uses = a->uses();
+  return std::find(uses.begin(), uses.end(), b) != uses.end();
 }