[turbofan] Merge compiler unit tests into src.

src/compiler/machine-operator-unittest.cc

Index: src/compiler/machine-operator-unittest.cc
diff --git a/test/compiler-unittests/machine-operator-unittest.cc b/src/compiler/machine-operator-unittest.cc
similarity index 98%
rename from test/compiler-unittests/machine-operator-unittest.cc
rename to src/compiler/machine-operator-unittest.cc
index 84ffd341bea1877f249eaca494fdf4859ef10bbb..5950ecb6018e9d24866d15707cee7ca04a9c7d89 100644
--- a/test/compiler-unittests/machine-operator-unittest.cc
+++ b/src/compiler/machine-operator-unittest.cc
@@ -2,9 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "src/compiler/compiler-unittests.h"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/operator-properties-inl.h"
-#include "test/compiler-unittests/compiler-unittests.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using testing::IsNull;