[turbofan] Merge compiler unit tests into src.

src/compiler/common-operator-unittest.cc

Index: src/compiler/common-operator-unittest.cc
diff --git a/test/compiler-unittests/common-operator-unittest.cc b/src/compiler/common-operator-unittest.cc
similarity index 81%
rename from test/compiler-unittests/common-operator-unittest.cc
rename to src/compiler/common-operator-unittest.cc
index 79a34df2a997c0e5d1c2f09f7e69fe364291d571..109873be9ea37e42d0da2906e60eb8569b3fae3d 100644
--- a/test/compiler-unittests/common-operator-unittest.cc
+++ b/src/compiler/common-operator-unittest.cc
@@ -2,21 +2,31 @@
 // 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/common-operator.h"
+#include "src/compiler/compiler-unittests.h"
 #include "src/compiler/operator-properties-inl.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
-static const int kArguments[] = {1, 5, 6, 42, 100, 10000, kMaxInt};
+namespace {
+
+class CommonOperatorTest : public CompilerTest {
+ public:
+  CommonOperatorTest() : common_(zone()) {}
+  virtual ~CommonOperatorTest() {}
+
+  CommonOperatorBuilder* common() { return &common_; }
 
+ private:
+  CommonOperatorBuilder common_;
+};
 
-CommonOperatorTest::CommonOperatorTest() : common_(zone()) {}
 
+const int kArguments[] = {1, 5, 6, 42, 100, 10000, kMaxInt};
 
-CommonOperatorTest::~CommonOperatorTest() {}
+}  // namespace
 
 
 TEST_F(CommonOperatorTest, ControlEffect) {