Make unittests work in component build

src/compiler/graph-visualizer.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_GRAPH_VISUALIZER_H_
 #define V8_COMPILER_GRAPH_VISUALIZER_H_
 
 #include <stdio.h>
 #include <iosfwd>
 #include <memory>
 
+#include "src/globals.h"
+
 namespace v8 {
 namespace internal {
 
 class CompilationInfo;
 
 namespace compiler {
 
 class Graph;
 class InstructionSequence;
 class RegisterAllocationData;
 class Schedule;
 class SourcePositionTable;
 
 std::unique_ptr<char[]> GetVisualizerLogFileName(CompilationInfo* info,
                                                  const char* phase,
                                                  const char* suffix);
 
 struct AsJSON {
   AsJSON(const Graph& g, SourcePositionTable* p) : graph(g), positions(p) {}
   const Graph& graph;
   const SourcePositionTable* positions;
 };
 
-std::ostream& operator<<(std::ostream& os, const AsJSON& ad);
+V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os, const AsJSON& ad);
 
 struct AsRPO {
   explicit AsRPO(const Graph& g) : graph(g) {}
   const Graph& graph;
 };
 
-std::ostream& operator<<(std::ostream& os, const AsRPO& ad);
-
+V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os, const AsRPO& ad);
 
 struct AsC1VCompilation {
   explicit AsC1VCompilation(const CompilationInfo* info) : info_(info) {}
   const CompilationInfo* info_;
 };
 
 
 struct AsC1V {
   AsC1V(const char* phase, const Schedule* schedule,
         const SourcePositionTable* positions = nullptr,
@@ skipping 19 matching lines @@
 std::ostream& operator<<(std::ostream& os, const AsC1VCompilation& ac);
 std::ostream& operator<<(std::ostream& os, const AsC1V& ac);
 std::ostream& operator<<(std::ostream& os,
                          const AsC1VRegisterAllocationData& ac);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_GRAPH_VISUALIZER_H_