Make unittests work in component build

src/compiler/control-flow-optimizer.h

Index: src/compiler/control-flow-optimizer.h
diff --git a/src/compiler/control-flow-optimizer.h b/src/compiler/control-flow-optimizer.h
index 61785a0fc04a3755c6bd5b2846c2e162a65b8352..577c40d96d3f0e51be0c3a13f5ae35e0c1022415 100644
--- a/src/compiler/control-flow-optimizer.h
+++ b/src/compiler/control-flow-optimizer.h
@@ -6,6 +6,7 @@
 #define V8_COMPILER_CONTROL_FLOW_OPTIMIZER_H_
 
 #include "src/compiler/node-marker.h"
+#include "src/globals.h"
 #include "src/zone/zone-containers.h"
 
 namespace v8 {
@@ -18,8 +19,7 @@ class Graph;
 class MachineOperatorBuilder;
 class Node;
 
-
-class ControlFlowOptimizer final {
+class V8_EXPORT_PRIVATE ControlFlowOptimizer final {
  public:
   ControlFlowOptimizer(Graph* graph, CommonOperatorBuilder* common,
                        MachineOperatorBuilder* machine, Zone* zone);