Replace SmartPointer<T> with unique_ptr<T>

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/base/smart-pointers.h"
-
 namespace v8 {
 namespace internal {
 
 class CompilationInfo;
 
 namespace compiler {
 
 class Graph;
 class InstructionSequence;
 class RegisterAllocationData;
@@ skipping 51 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_