Move unit tests to test/unittests.

test/unittests/compiler/graph-unittest.h

Index: test/unittests/compiler/graph-unittest.h
diff --git a/src/compiler/graph-unittest.h b/test/unittests/compiler/graph-unittest.h
similarity index 97%
rename from src/compiler/graph-unittest.h
rename to test/unittests/compiler/graph-unittest.h
index b821165ee5f8054cc8da2d0bd616fc962d868ba9..c59c6699e02fb12c22794546de3cc991d34c6920 100644
--- a/src/compiler/graph-unittest.h
+++ b/test/unittests/compiler/graph-unittest.h
@@ -2,13 +2,13 @@
 // 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 {
@@ -140,4 +140,4 @@ Matcher<Node*> IsFloat64Sqrt(const Matcher<Node*>& input_matcher);
 }  //  namespace internal
 }  //  namespace v8
 
-#endif  // V8_COMPILER_GRAPH_UNITTEST_H_
+#endif  // V8_UNITTESTS_COMPILER_GRAPH_UNITTEST_H_