Convert //tools to use std::unique_ptr

tools/gn/toolchain.h

 // Copyright (c) 2013 The Chromium 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 TOOLS_GN_TOOLCHAIN_H_
 #define TOOLS_GN_TOOLCHAIN_H_
 
+#include <memory>
+
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string_piece.h"
 #include "tools/gn/item.h"
 #include "tools/gn/label_ptr.h"
 #include "tools/gn/scope.h"
 #include "tools/gn/source_file_type.h"
 #include "tools/gn/substitution_type.h"
 #include "tools/gn/tool.h"
 #include "tools/gn/value.h"
 
 // Holds information on a specific toolchain. This data is filled in when we
@@ skipping 54 matching lines @@
 
   // Returns TYPE_NONE on failure.
   static ToolType ToolNameToType(const base::StringPiece& str);
   static std::string ToolTypeToName(ToolType type);
 
   // Returns null if the tool hasn't been defined.
   const Tool* GetTool(ToolType type) const;
 
   // Set a tool. When all tools are configured, you should call
   // ToolchainSetupComplete().
-  void SetTool(ToolType type, scoped_ptr<Tool> t);
+  void SetTool(ToolType type, std::unique_ptr<Tool> t);
 
   // Does final setup on the toolchain once all tools are known.
   void ToolchainSetupComplete();
 
   // Targets that must be resolved before compiling any targets.
   const LabelTargetVector& deps() const { return deps_; }
   LabelTargetVector& deps() { return deps_; }
 
   // Specifies build argument overrides that will be set on the base scope. It
   // will be as if these arguments were passed in on the command line. This
@@ skipping 15 matching lines @@
 
   const SubstitutionBits& substitution_bits() const {
     DCHECK(setup_complete_);
     return substitution_bits_;
   }
 
   void set_concurrent_links(int cl) { concurrent_links_ = cl; }
   int concurrent_links() const { return concurrent_links_; }
 
  private:
-  scoped_ptr<Tool> tools_[TYPE_NUMTYPES];
+  std::unique_ptr<Tool> tools_[TYPE_NUMTYPES];
 
   // How many links to run in parallel. Only the default toolchain's version of
   // this variable applies.
   int concurrent_links_;
 
   bool setup_complete_;
 
   // Substitutions used by the tools in this toolchain.
   SubstitutionBits substitution_bits_;
 
   LabelTargetVector deps_;
   Scope::KeyValueMap args_;
 };
 
 #endif  // TOOLS_GN_TOOLCHAIN_H_