[turbofan] Merge compiler unit tests into src.

src/compiler/compiler-unittests.cc

Index: src/compiler/compiler-unittests.cc
diff --git a/test/compiler-unittests/compiler-unittests.cc b/src/compiler/compiler-unittests.cc
similarity index 97%
rename from test/compiler-unittests/compiler-unittests.cc
rename to src/compiler/compiler-unittests.cc
index 86d12400135b3a84f259d594121e174b3a35d10f..9ae03a616b5adc74b9c700a03ca4491fdd76ab31 100644
--- a/test/compiler-unittests/compiler-unittests.cc
+++ b/src/compiler/compiler-unittests.cc
@@ -3,8 +3,8 @@
 // found in the LICENSE file.
 
 #include "include/libplatform/libplatform.h"
+#include "src/compiler/compiler-unittests.h"
 #include "src/isolate-inl.h"
-#include "test/compiler-unittests/compiler-unittests.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using testing::IsNull;
@@ -79,7 +79,7 @@ class CompilerTestEnvironment V8_FINAL : public ::testing::Environment {
   v8::Platform* platform_;
 };
 
-}
+}  // namespace
 
 
 int main(int argc, char** argv) {