Refactor ChangeLowering class to avoid template specialization.

test/compiler-unittests/common-operator-unittest.cc

Index: test/compiler-unittests/common-operator-unittest.cc
diff --git a/test/compiler-unittests/common-operator-unittest.cc b/test/compiler-unittests/common-operator-unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..fa5af1ea6a97ac478187b814f5e413518f5ddfeb
--- /dev/null
+++ b/test/compiler-unittests/common-operator-unittest.cc
@@ -0,0 +1,20 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "test/compiler-unittests/common-operator-unittest.h"
+
+#include "src/compiler/operator-properties-inl.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+CommonOperatorTest::CommonOperatorTest() : common_(zone()) {}
+
+
+CommonOperatorTest::~CommonOperatorTest() {}
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8