Move unit tests to test/unittests.

test/unittests/compiler/graph-unittest.h

 // 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.
 
-#ifndef V8_COMPILER_GRAPH_UNITTEST_H_
-#define V8_COMPILER_GRAPH_UNITTEST_H_
+#ifndef V8_UNITTESTS_COMPILER_GRAPH_UNITTEST_H_
+#define V8_UNITTESTS_COMPILER_GRAPH_UNITTEST_H_
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/machine-operator.h"
-#include "src/test/test-utils.h"
+#include "test/unittests/test-utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class HeapObject;
 template <class T>
 class Unique;
 
@@ skipping 111 matching lines @@
 Matcher<Node*> IsChangeUint32ToUint64(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsTruncateFloat64ToFloat32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsTruncateFloat64ToInt32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsTruncateInt64ToInt32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsFloat64Sqrt(const Matcher<Node*>& input_matcher);
 
 }  //  namespace compiler
 }  //  namespace internal
 }  //  namespace v8
 
-#endif  // V8_COMPILER_GRAPH_UNITTEST_H_
+#endif  // V8_UNITTESTS_COMPILER_GRAPH_UNITTEST_H_