Make unittests work in component build

src/interpreter/bytecode-dead-code-optimizer.h

Index: src/interpreter/bytecode-dead-code-optimizer.h
diff --git a/src/interpreter/bytecode-dead-code-optimizer.h b/src/interpreter/bytecode-dead-code-optimizer.h
index 188d61089021840f2aba3128dcf9ac7ef8c3c5ef..7350981c7386595cee4bb3c9e15f97fc508fcbe4 100644
--- a/src/interpreter/bytecode-dead-code-optimizer.h
+++ b/src/interpreter/bytecode-dead-code-optimizer.h
@@ -5,6 +5,8 @@
 #ifndef V8_INTERPRETER_BYTECODE_DEAD_CODE_OPTIMIZER_H_
 #define V8_INTERPRETER_BYTECODE_DEAD_CODE_OPTIMIZER_H_
 
+#include "src/base/compiler-specific.h"
+#include "src/globals.h"
 #include "src/interpreter/bytecode-pipeline.h"
 
 namespace v8 {
@@ -13,8 +15,9 @@ namespace interpreter {
 
 // An optimization stage for eliminating obviously dead code in bytecode
 // generation.
-class BytecodeDeadCodeOptimizer final : public BytecodePipelineStage,
-                                        public ZoneObject {
+class V8_EXPORT_PRIVATE BytecodeDeadCodeOptimizer final
+    : public NON_EXPORTED_BASE(BytecodePipelineStage),
+      public NON_EXPORTED_BASE(ZoneObject) {
  public:
   explicit BytecodeDeadCodeOptimizer(BytecodePipelineStage* next_stage);